Prof.
Emilio Lora-Tamayo
(CSIC)
03/07/2014, 09:30
Prof.
PILAR CAMPINS FALCÓ
(University of Valencia)
03/07/2014, 09:45
Prof.
Adolfo Azcárraga
(University of Valencia)
03/07/2014, 10:00
Prof.
Francisco Del Águila
(University of Granada)
03/07/2014, 10:15
Dr.
Silvia Goy Lopez
(CIEMAT)
03/07/2014, 11:00
The performance of CMS detector during LHC Run 1 will be presented. Planned improvements for Run 2 will also be discussed.
Dr.
Nicolas Arnaud
(LAL (CNRS/IN2P3 and Université Paris Sud))
03/07/2014, 11:00
Teaching particle physics at high-school level is always challenging, one issue being that there is no easy window onto the world of the “infinitely small”. Cosmic rays are therefore an invaluable tool to allow the students to sense the elementary particles and to understand the problems raised by their detection.
In France, a collaboration started several years ago between the “Institut...
Haruki Nishino
(Kavli IPMU)
03/07/2014, 11:00
A large number of Cosmic Microwave Background (CMB) polarization experiments have been searching for the CMB B-mode polarization signatures, which were produced either in degree scales by primordial gravitational waves from the epoch of cosmic inflation or in sub-degree scales by gravitational lensing by cosmological large-scale structure. POLARBEAR is a ground-based experiment designed to...
Prof.
Swapan Chattopadhyay
(Cockcroft Institute)
03/07/2014, 11:00
A general overview of concepts, designs, technologies and future possibilities will be presented for energy and intensity frontier accelerators and colliders for particle physics in the next 50 to 100 years, offering a scientific, technical and fiscal risk-benefit analysis and strategies to move forward. The talk will discuss the near-, mid-, and long-term future options including various...
Mr.
Javier Duarte
(California Institute of Technology)
03/07/2014, 11:00
In this talk, the latest results from CMS on inclusive searches for squark and gluino production at the LHC are reviewed. A variety of complementary final state signatures and methods are presented using 20/fb of data from the 8 TeV LHC run.
Prof.
Gabriella Sciolla
(Brandeis University)
03/07/2014, 11:00
A review of the latest results on the measurment of the cross sections and couplings of the Higgs boson
in the ZZ decay channel with the ATLAS detector is presented,
using approximately 25 fb-1 of pp collision data collected at 7 TeV and 8 TeV in 2011 and 2012.
Dr.
Claude Duhr
(Durham University)
03/07/2014, 11:00
I review the current status of higher-order calculations in perturbative QCD, with special regards to recent developments, and process of interest for physics at the LHC.
Mr.
Giovanni Benato
(University of Zurich)
03/07/2014, 11:00
The search for neutrinoless double beta decay ($0\nu\beta\beta$) is playing since two decades a major role in astroparticle physics.
The discovery of this process would demonstrate the violation of lepton number conservation
and the presence of a Majorana term in the neutrino mass.
The GERmanium Detector Array ({\sc{gerda}}) experiment, located at the Gran Sasso underground laboratory in...
Dr.
Marco Guzzi
(DESY Hamburg)
03/07/2014, 11:00
We study heavy-flavor production at hadron colliders and present phenomenological results for the differential top-quark pair production cross section calculated in perturbative QCD at approximate next-to-next-to-leading order (NNLO) $O(\alpha_s^4)$.
Methods of threshold resummation in QCD are utilized for this calculation which is implemented in the computer code \textsc{Difftop}....
Dr.
Tom Whyntie
(Queen Mary, University of London)
03/07/2014, 11:15
CERN@school [1] brings technology from CERN [2] into the classroom to aid with the teaching of particle physics. It also aims to inspire the next generation of physicists and engineers by giving participants the opportunity to be part of a national collaboration of students, teachers and academics, analysing data obtained from detectors based on the ground and in space to make new,...
Dr.
Jovan Mitrevski
(Ludwig-Maximilians-Universität München)
03/07/2014, 11:15
Despite the absence of experimental evidence, weak scale supersymmetry remains one
of the best motivated and studied Standard Model extensions. This talk summarises
recent ATLAS results on inclusive searches for supersymmetric squarks and gluinos,
Results are presented for searches in final state events containing jets, missing transverse
momentum, light leptons, taus or photons.
Adish Vartak
(University of California San Diego)
03/07/2014, 11:15
A search for the Higgs boson has been carried out in the Higgs to ZZ to four leptons decay mode with the CMS detector at the LHC collider, where leptons are electrons or muons. The analysis is based on pp collision data collected at centre-of-mass energies of 7 and 8 TeV, corresponding to integrated luminosities of 5/fb and 20/fb, respectively. The analysis strategy and measurements of the...
Mr.
Timothée Theveneaux-Pelzer
(LPC Clermont-Ferrand - CNRS/IN2P3)
03/07/2014, 11:15
Measurements of the inclusive top quark pair production cross sections in proton-proton collisions with the ATLAS detector at the Large Hadron Collider are presented. The measurements are performed requiring one or two electrons or muons in the final state. Various experimental techniques are compared. The most accurate result requires opposite sign electrons and muons achieves a precision of...
Prof.
Jihn E. Kim
(Kyung Hee University)
03/07/2014, 11:24
To interpret DE as the potential energy of the approximate U(1) dark energy
global symmetry, one must find color-anomaly free U(1). This necessarily
invites to consider U(1)de symmetry together with U(1)PQ symmetry such
that one gluon-anomaly free combination is constructed. This gives a hilltop
potential of height GUT scale energy density. Since the recent BICEP2
result forbid the...
Dr.
Simon Badger
(CERN)
03/07/2014, 11:25
I review recent progress in the development of automated tools for QCD calculations, especially at NLO, and their application to LHC processes.
Mr.
Nickolas Mc Coll
(UC Santa Barbara)
03/07/2014, 11:30
In this talk, the latest results from CMS on searches for stop and sbottom squarks are presented. Searches for direct 3rd generation squark production in a variety of decay channels are reviewed. The results are based on 20/fb of data collected during the 8 TeV LHC run.
Dr.
Loic Quertenmont
(Université catholique de Louvain)
03/07/2014, 11:30
Constraints on the total Higgs boson width, Gamma_H, are presented using off-shell production and decay in the ZZ channel. The analysis is based on pp collision data collected at centre-of-mass energies of 7 and 8 TeV by the CMS experiment at the LHC, corresponding to integrated luminosities of 5/fb and 20/fb, respectively. The analyses are carried out in the ZZ to 4-lepton and to...
Dr.
Yoshihito Gando
(Research Center for Neutrino Science, Tohoku Univ.)
03/07/2014, 11:30
KamLAND-Zen is an experiment for neutrinoless double beta decay search with xenon 136 based on large liquid scintillator detector KamLAND.
The first phase of the experiment was operated from Oct. 12, 2011 to June 14, 2012 and we set lower limit for the neutrino-less double beta decay half-life , T1/2(0nu) > 1.9*10^{25} yr. The combined result of KamLAND-Zen and EXO data give T1/2(0nu) >...
Dr.
Antonio Limosani
(University of Sydney)
03/07/2014, 11:30
A global test of these Standard Model predictions is presented through the study of the common final state made up of a pair of an oppositely charged electron and muon in proton-proton collisions at sqrt(s) = 7 TeV recorded by the ATLAS detector at the LHC. The simultaneous measurement of the cross-sections of the pair production of top quarks, tau-leptons via Drell-Yan, and WW bosons is...
Dr.
Steven Goldfarb
(University of Michigan)
03/07/2014, 11:40
The ATLAS Education & Outreach program supports a wide variety of projects designed to communicate the goals and accomplishments of the ATLAS Experiment to the general public. Essential to the implementation of these projects are a well structured and current communication plan, an active core group with diverse expertise, and an engaged and imaginative collaboration. We present a small...
Dr.
Carlos Lacasta
(IFIC-Valencia)
03/07/2014, 11:40
After the successful LHC operation at the center-of-mass energies of 7 and 8 TeV in 2010 - 2012, plans are actively advancing for a series of upgrades of the accelerator, culminating roughly ten years from now in the high luminosity LHC (HL-LHC) project, delivering of the order of five times the LHC nominal instantaneous luminosity along with luminosity leveling. The final goal is to extend...
Ms.
Sandrine Laplace
(LPNHE / CNRS)
03/07/2014, 11:45
A review of the latest results on Higgs boson decays to photons with the ATLAS detector is presented, using approximately 25 fb-1 of pp collision data collected at 7 TeV and 8 TeV in 2011 and 2012.
Lukas Baeni
(ETH Zurich (CH))
03/07/2014, 11:45
Result of merged abstracts:
Precision measurements are presented of the top-quark pair inclusive production cross section in proton-proton collisions at the LHC at centre-of-mass energies of 7 TeV and 8 TeV. The data are collected with the CMS experiment during the years 2011 and 2012. The analyses include all top quark pair final states with the exception of events with two tau-leptons in...
Prof.
Michelle Dolinski
(Drexel University)
03/07/2014, 11:45
See attached PDF for proper formatting.
EXO-200 is one of the most sensitive searches for neutrinoless double beta decay in the world. The experiment uses 175 kg of enriched liquid xenon in an ultralow background time projection chamber installed at the Waste Isolation Pilot Plant, a salt mine with a 1600 m water equivalent overburden. This detector has demonstrated excellent energy...
Dr.
Joao Firmino da Costa
(CEA Saclay)
03/07/2014, 11:45
Naturalness arguments for weak-scale supersymmetry favour supersymmetric partners
of the third generation quarks with masses not too far from those of their Standard Model
counterparts. Top or bottom squarks with masses less than a few hundred GeV can also
give rise to direct pair production rates at the LHC that can be observed in the data sample
recorded by the ATLAS detector. The...
Mr.
Germán Sborlini
(IFIC and Universidad de Buenos Aires)
03/07/2014, 11:50
We present splitting functions in the triple collinear limit at next-to-leading order in the strong coupling. We performed the computation in the context of massless QCD+QED, and consider first collinear processes which include at least one photon. The IR divergent structure of the multi-partonic splitting functions agrees with the Catani's formula. Consistency checks based on symmetry...
Max Klein
(University of Liverpool)
03/07/2014, 11:50
The Large Hadron Electron Collider (LHeC) is a proposed facility for electron-proton/nucleus scattering at CERN, which will collide electrons and positrons from a new 60 GeV accelerator with the LHC beams. After the release of a detailed technical design report in 2012, the configuration of a linac with racetrack shape has been chosen for its default design. Further work to adapt the electron...
Dr.
Thomas McCauley
(University of Notre Dame)
03/07/2014, 12:00
The CMS Collaboration is preparing for a public release up to a half of the reconstructed collision data collected in 2010, in accordance with its commitment to open access and data preservation. Efforts are at present focused on the usability of the data in education. The data will be accompanied by example applications tailored for different levels –– including ready-to-use web-based...
Dr.
Robert Schoefbeck
(HEPHY Vienna)
03/07/2014, 12:00
Searches that target SUSY with extremely compressed spectra are presented using the ATLAS and CMS detectors. This includes monojet signatures, with or without "c-tagging", as well as data taken with specially loose trigger conditions during the 8 TeV LHC run in 2012.
juan jose gomez cadenas
(IFIC)
03/07/2014, 12:00
Neutrinos may be Majorana particles. If so, neutrinoless double beta decay processes could be observed by the next-generation bb0nu experiments. I will briefly discuss one of the most promising ideas in the field, the use of a High Pressure Gas Xenon TPC (HPGXe) with electroluminescence gain and optical readout. A 100 kg incarnation of such a device will start operations at the Canfranc...
Douglas Benjamin
(Duke University)
03/07/2014, 12:00
The large centre-of-mass energy available at the proton-proton collider LHC allows for the copious production of top quark pairs in association with other final state particles at high transverse momentum. The ATLAS experiment has measured several final state observables that are sensitive to additional parton radiation in top anti-top quark final states. Examples are the multiplicity of jets...
Dr.
Francesca Pastore
(Royal Holloway University of London (UK))
03/07/2014, 12:00
The ATLAS trigger has been used very successfully for the online event
selection during the first run of the LHC between 2009-2013 at a
centre-of-mass energy between 900 GeV and 8 TeV. The trigger system
consists of a hardware Level-1 (L1) and a software based high-level
trigger (HLT) that reduces the event rate from the design
bunch-crossing rate of 40 MHz to an average recording rate of...
Prof.
Gabriela Barenboim
(University of Valencia and IFIC)
03/07/2014, 12:00
We postulate that the need of transplanckian masses that single field inflation seems to need to accomodate experimental data can be due to the fact that we "force" our scalar field to be minimally coupled to gravity. Although it is true that the field itself is a "dummy" variable and one is always free to make a field redefinition to the Einstein frame (where the field is minimally coupled)...
Dr.
German Rodrigo
(IFIC Valencia)
03/07/2014, 12:05
The duality theorem provides a relationship between loop integrals and phase space integrals, such that virtual and real corrections in perturbative higher order calculations can be recast into a form which is suitable for a simultaneous simulation. We summarize recent developments of the loop-tree duality method at one-loop and higher orders.
Dr.
DEJAN TRBOJEVIC
(Brookhaven National Laboratory)
03/07/2014, 12:15
We present a design of polarized electron - proton/He3+ and ion collider eRHIC in the present tunnel of the existing Relativistic Heavy Ion Collider (RHIC). Polarized electrons are accelerated up to the maximum energy of 21 GeV with a 1.334 GeV Energy Recovery Linac - ERL using two Non-Scaling Fixed Field Alternating Gradient (NS-FFAG) arcs. 70% polarized protons have an energy range 25-250...
Mr.
Ivan Asin Cruz
(DESY (Germany))
03/07/2014, 12:15
Differential top quark pair production cross sections are measured in proton-proton collisions at the LHC at centre-of-mass energies of 7 and 8 TeV, using data collected by the CMS experiment in the years 2011 and 2012. The differential cross sections are measured as functions of various kinematic observables, including the transverse momentum and rapidity of the (anti)top quark and the...
Dr.
Valentina Lozza
(TU Dresden)
03/07/2014, 12:15
The SNO+ experiment will employ 780 tonnes of liquid scintillator to explore a variety of fundamental physics. Chief amongst these will be a sensitive search for neutrinoless double beta decay, to be achieved by loading 130Te into the scintillator using a new technique. A combination of purification, passive shielding and background tagging is expected to leave 8B solar neutrinos and 2nbb...
Mrs.
ANA MARÍA MARÍN FARRONA
(INSTITUTO DE FÍSICA DE CANTABRIA (IFCA))
03/07/2014, 12:15
“Café Científico” is a series of relaxed discussions about different topics of interest related to research done at the UC that tries to connect research and society. This outreach activity allows people to ask/discuss/comment with the researcher while engaging with cutting-edge researchers from University of Cantabria. To avoid the formalism that the university space offers it is done in an...
Nicolas Greiner
(Max-Planck Institute for Physics)
03/07/2014, 12:20
In this talk I will present the recent developments of the GoSam package, an automated tool for one-loop calculations. I will give a short introduction and explain the most recent features and developments. Furthermore, phenomenological applications and results are presented.
Mr.
Björn Sarrazin
(Physikalisches Institut, Bonn University, Germany)
03/07/2014, 12:20
Constrained SUSY models like the CMSSM might look less attractive nowadays because of fine tuning arguments. They also might look less probable in terms of Bayesian statistics. The question how well the model under study describes the data, however, is answered by frequentist p-values. Thus, for the first time, we calculate p-values for the CMSSM by performing dedicated toy experiments. We...
Dr.
Robert Harrington
(University of Edinburgh)
03/07/2014, 12:20
The latest results on the measurement of the Higgs boson mass in the diphoton and ZZ decay channels
with the ATLAS detector is presented, using approximately 25 fb-1 of pp collision data collected
at 7 TeV and 8 TeV in 2011 and 2012.
Dr.
Harry Cliff
(University of Cambridge & Science Museum, London)
03/07/2014, 12:30
On 12th November 2013 the Science Museum in London launched Collider, a major temporary exhibition about the Large Hadron Collider at CERN. The launch event was attended by Peter Higgs, Stephen Hawking, Rolf Heuer and the UK Chancellor of the Exchequer and attracted significant media attention and critical praise in the UK and internationally. By the time the exhibition completes its London...
Dr.
Sandra Leone
(INFN Pisa)
03/07/2014, 12:30
We present the most recent CDF measurements of single top quark production cross section. We also present the measurements of single top quark production in s-channel and t-channel separately. The extraction of the CKM matrix element |V_tb| from the single top quark cross section is discussed as well.
Dr.
Monica Sisti
(Università degli Studi di Milano-Bicocca and INFN Milano-Bicocca)
03/07/2014, 12:30
CUORE is a 741 kg array of TeO2 bolometers for the search of neutrinoless double beta decay of Te-130. The detector is being constructed at the Laboratori Nazionali del Gran Sasso, Italy, where it will start taking data in 2015. If the target background of 0.01 counts/(keV kg y) will be reached, in five years of data taking CUORE will have an half life sensitivity of about 10^26 y. CUORE-0 is...
Mr.
Sani Matteo
(University of California San Diego)
03/07/2014, 12:35
Using the high mass resolution channels H -> gamma gamma and H -> ZZ > 4 leptons, where the leptons are electrons or muons, a precise measurement of the Higgs boson mass is obtained. The analysis is based on pp collision data collected at centre-of-mass energies of 7 and 8 TeV, corresponding to integrated luminosities of 5/fb and 20/fb, respectively. The results together with strategy of the...
Prof.
Michael Klasen
(Institute for Theoretical Physics, University of Münster)
03/07/2014, 12:35
The search for electroweak superpartners has recently moved to the centre of interest at the LHC. We provide the currently most precise theoretical predictions for these particles at NLO+NLL, use them to assess the precision of parton shower simulations, and reanalyse public experimental results assuming more general decompositions of gauginos and sleptons.
Mr.
Michele Re Fiorentin
(University of Southampton)
03/07/2014, 12:36
I will briefly review the main aims and concepts of leptogenesis, analysing different possible realisations. Particular attention will be devoted to the so-called $N_2$-dominated scenario, both in its unflavoured and flavoured versions. Its main features will be pointed out, as well as the impact of possible relevant corrections. I will then consider the conditions required by strong thermal...
Dr.
Elisabetta Prencipe
(IKP Forschungszentrum Juelich)
03/07/2014, 12:40
The Facility for Antiproton and Ion Research (FAIR) is an international accelerator facility which will use antiprotons and ions to perform research in the fields of nuclear, hadron and particle physics, atomic and anti-matter physics, high density plasma physics, and applications in condensed matter physics, biology and the bio-medical sciences. It is situated in Darmstadt (Germany) and it is...
Dr.
Filippo Orio
(INFN - Sezione di Roma)
03/07/2014, 12:45
The quest for Neutrinoless Double Beta Decay ($0\nu$DBD) represents one of the most promising ways to investigate the neutrino mass nature, Dirac or Majorana. A convincing detection claim demands for detectors with excellent energy resolution and almost zero background in the energy region of interest.
These features can be obtained with the approach of the LUCIFER project, funded by an...
Mrs.
MARÍN ANA MARÍA
(INSTITUTO DE FÍSICA DE CANTABRIA)
03/07/2014, 12:45
In April 2013, a CERN exhibition was shown in Santander: “The largest scientific instrument ever built”. Around the exhibition, were proposed several activities done by the researchers that work on the subjects: guided tours for children, younger and adults, workshops, film projections… In this form, the exhibition was visited by more than two thousand people, a complete success keeping in...
Prof.
Christian Schwanenberger
(University of Manchester)
03/07/2014, 12:50
We present measurements of the cross sections for the two main
production modes of single top quarks in pp(bar) collisions at a
center-of-mass energy of 1.96 TeV in the Run II data collected with the D0 detector at the Fermilab Tevatron Collider. For this measurement the full D0 data set corresponding to an integrated luminosity of 9.7 fb−1 is used. We present the evidence of the s-channel...
Dr.
Benedikt Biedermann
(Universität Würzburg)
03/07/2014, 12:50
We present theoretical predictions for five jet production in proton-proton collisions at next-to-leading order accuracy in QCD. Inclusive as well as differential observables are studied for collision energies of 7 and 8 TeV. In general the next-to-leading order corrections stabilize the theoretical predictions with respect to scale variations. In case of the inclusive jet cross sections, we...
Dr.
Elizaveta Shabalina
(University of Goettingen)
03/07/2014, 12:50
Since the discovery of a Higgs boson by the ATLAS and CMS experiments at the LHC, the emphasis has shifted towards measurements of its properties and the search for less sensitive channels in order to determine whether the new particle is the Standard Model Higgs boson. Of particular importance is the direct observation of the coupling of the Higgs boson to top quarks. In this talk a review of...
Dr.
Andrée Robichaud-Véronneau
(McGill University)
03/07/2014, 12:50
Many supersymmetry models feature charginos, neutralinos and also sleptons with masses less
than a few hundred GeV. These can give rise to direct pair production rates at the LHC that can
be observed in the data sample recorded by the ATLAS detector. The talk presents results from
searches for charginos, neutralinos and slepton production in final state events characterized by
the...
Prof.
Vladimir Kekelidze
(Joint Institute for Nuclear Research, Dubna)
03/07/2014, 12:55
The NICA (Nuclotron-based Ion Collider fAcility) project is now under active realization stage at the Joint Institute for Nuclear Research (JINR, Dubna). The main goal of the project is an experimental study of hot and dense strongly interacting matter in heavy ion (up to Au) collisions at centre-of-mass energies up to 11 GeV per nucleon. Two modes of operation is foreseen, collider mode and...
Dr.
Nicolas Arnaud
(LAL (CNRS/IN2P3 and Université Paris Sud))
03/07/2014, 13:00
Sciences ACO is a non-profit association based in Orsay (France). It manages a “Museum of Light and Matter” visited by more than 1,000 people each year. In this unique place, scientists and cultural mediators preserve, exhibit and explain pieces of the history of science & technology, to pass on the knowledge of this heritage to the audience.
The museum is located at the centre of the...
Dr.
Denys Poda
(Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM))
03/07/2014, 13:00
Neutrinoless double beta (0nu2b) decay is a powerful tool to investigate neutrino properties, weak interaction, and effects beyond the Standard Model of particle physics. The main aim of the LUMINEU project (Luminescent Underground Molybdenum Investigation for NEUtrino mass and nature) is to realize a pilot experiment to search for 0nu2b decay of 100Mo with the help of zinc molybdate (ZnMoO4)...
Dr.
Anne Evelyn Dabrowski
(CERN, Switzerland)
03/07/2014, 13:00
To cope with the higher luminosity, higher energy and shorter bunch spacing of 25 ns at the LHC after 2014, an upgrade program is performed for the detectors to measure the luminosity and machine induced background. A new detector is the pixel luminosity telescope consisting of 8 telescopes, equipped with silicon pixel sensors, on both ends of the interactions point (IP). The Beam Conditions...
Dr.
Leandro Cieri
(La Sapienza, Università di Roma)
03/07/2014, 13:05
Diphoton production is the main background in searches and studies (performed at the LHC) for a low mass Higgs boson, decaying in a pair of photons. And for this reason, it is desirable to count with the best theoretical tool to describe this background. In this talk we will present a detailed study on the photon isolation prescriptions, together with a "tight isolation accord" in order to...
Dr.
Owen Long
(UC Riverside, United States)
03/07/2014, 13:05
In this talk, the latest results from CMS on searches for supersymmetry produced through electroweak production channels are presented using 20/fb of data from the 8 TeV LHC run. A variety of complementary final state signatures and methods are used to probe gaugino and slepton production.
Mr.
Mario Merola
(INFN Sezione di Napoli (IT))
03/07/2014, 13:10
Result of abstract merging:
Measurements are presented of t-channel single top quark production in proton-proton collisions at the LHC at centre-of-mass energies of 7 and 8 TeV, using data collected with the CMS experiment during the years 2011 and 2012. The analyses consider decay channels where the W from the top decays into electron-neutrino or muon-neutrino, and makes use of kinematic...
Dr.
Andry Rakotozafindrabe
(CEA Saclay, IRFU, France)
03/07/2014, 13:10
If used in the fixed-target mode, the multi-TeV LHC beams will allow the most energetic fixed-target experiments ever performed, including studies of high precision pp, pd and pA collisions at sqrt(s_NN) ~ 115 GeV as well as Pb-p and PbA collisions at sqrt(s_NN) ~ 72 GeV. In particular, AFTER@LHC -- for A Fixed-Target ExperRiment -- can greatly complement [1] existing collider experiments, in...
Dr.
Lorenzo Bianchini
(ETH Zurich Institute for Particle Physics)
03/07/2014, 13:10
Searches for a Higgs boson produced in association with top quarks, both singly and in pairs, and decaying to gamma gamma, ZZ, WW, tautau, and bbbar final states are presented. The analyses use pp collision data collected at center-of-mass energies of 7 and 8 TeV, corresponding to integrated luminosities of about 5/fb and 20/fb, respectively. No signals are observed for production of a Higgs...
Dr.
P. S. Bhupal Dev
(University of Manchester)
03/07/2014, 13:12
Flavour effects play an important role in the statistical evolution of particle number densities. We present a fully flavour-covariant formulation of transport phenomena. As an application, we consider the heavy-neutrino and lepton flavour effects in Resonant Leptogenesis scenario, for which our formalism provides a complete and unified description.
Dr.
Hector GOMEZ MALUENDA
(Laboratoire de l'Accélérateur Linéaire (LAL))
03/07/2014, 13:15
The NEMO-3 experiment looked for neutrinoless double beta decay processes from 2003 to 2011 at the Modane Underground Laboratory. Seven isotopes were studied by the simultaneous recording of the energy and track of the event, standing out 100-Mo and 82-Se since they were the most massive ones. No evidence for neutrinoless double beta decay has been observed, leading to set limits on the...
Dr.
Michael Barnett
(Lawrence Berkeley National Lab)
03/07/2014, 13:15
Phantom of the Universe is a planetarium show premiering late summer 2014 that will showcase an exciting exploration of dark matter, from the Big Bang to the Large Hadron Collider. The show will reveal the first hints of its existence through the eyes of Fritz Zwicky. Viewers will marvel at the astral choreography witnessed by Vera Rubin in the Andromeda galaxy. They will plummet deep...
Tomasz Skwarnicki
(Syracuse University)
03/07/2014, 15:00
The latest years have seen a resurrection of interest in searches for predicted and exotic states motivated by tantalising observations by Belle and CDF. Using the data collected at pp collisions at 7 and 8 TeV by the LHCb experiment. We present a study of the properties of the Z(4430)+ resonance, with a first unambiguous determination of its quantum numbers. We also report on observations of...
Dr.
Krzysztof Rolbiecki
(IFT Madrid)
03/07/2014, 15:00
We discuss a possible explanation of a slight excess in the WW cross section measurement performed by ATLAS and CMS. While still consistent with the Standard Model within 1-2 sigma, the excess could be also a first hint of physics beyond the Standard Model. We argue that this effect could be attributed to the production supersymmetric particles, eg. stops or charginos. The stops of mass ~200...
Dr.
Dominic Hirschbuehl
(University Wuppertal)
03/07/2014, 15:00
Measurements of single top-quark production cross section in proton proton collisions at 7 and 8 TeV are presented. In the leading order process, a W boson is exchanged in the t-channel. For this process for the first time a fiducial cross section measured within the detector acceptance is presented and the modelling uncertainty when extrapolating to the total inclusive cross section is...
Prof.
Stephanie Majewski
(University of Oregon (United States))
03/07/2014, 15:00
The ATLAS experiment is designed to study the proton-proton collisions
produced at the Large Hadron Collider (LHC) at CERN. Its calorimeter
system measures the energy and direction of final state particles over the pseudorapidity range $|\eta| < 4.9$. Accurate identification and measurement of the characteristics of electromagnetic objects (electrons/photons) are performed by liquid argon...
Dr.
Eusebio Sanchez
(CIEMAT)
03/07/2014, 15:00
The Dark Energy Survey (DES) is a next generation sky survey
aimed directly at understanding the dark energy, by measuring
the 14-billion-year history of cosmic expansion and the growth
of structure in the universe with high precision.
During fall 2012 the DES collaboration installed and commissioned
DECam, a 570 mega-pixel optical and near-infrared camera with a
large 3 sq. deg....
Dr.
Mariam Tórtola
(IFIC, Valencia)
03/07/2014, 15:00
In this work we present an updated global fit to neutrino oscillation data within the three-flavour framework. The most recent data from solar and atmospheric neutrino experiments are included in our analysis together with the latest results from the long-baseline accelerator experiments T2K and MINOS and the recent measurements of reactor neutrino disappearance reported by Double Chooz,...
Dr.
Masahiro Komatsu
(Nagoya University, JAPAN)
03/07/2014, 15:15
The OPERA experiment is designed to prove neutrino oscillations in the
nu_mu to nu_tau channel through the direct observation of the tau lepton
in tau neutrino charged current interactions. The experiment has
accumulated data for five years, from 2008 to 2012, with the CERN
Neutrinos to Gran Sasso (CNGS), an almost pure nu_mu beam.
In the last two years, a very large amount of the data...
Mr.
Kees Jan de Vries
(Imperial College London)
03/07/2014, 15:15
We present the latest results from the MasterCode collaboration on supersymmetric models, in particular on the CMSSM, the NUHM1, the NUHM2 and the pMSSM. We combine the data from LHC Run I with astro-physical observables, flavor and electroweak precision observables. We determine the best fit regions of these models and anlyze the discovery potential at LHC Run II.
Dr.
Efe Yazgan
(Ghent University)
03/07/2014, 15:20
Single top topologies are exploited for studies of top quark properties. This includes the first measurement of single top polarization in the t-channel production mode in pp collisions, which directly confirms the V-A nature of the tWb production vertex. W-helicity fractions are measured in the phase space sampled by a selection optimized for t-channel single top production, orthogonal to the...
Federico Ferri
(CEA/Saclay Irfu/SPP)
03/07/2014, 15:20
The precise determination of the mass, the width and the couplings of the particle discovered in 2012 around 125 GeV is of capital importance to clarify the nature of such a particle, in particular to establish precisely if it is a Standard Higgs boson. In several new physics scenarios, in fact, a Higgs boson may behave differently with respect to the Standard one, or may not be unique, i.e....
Dr.
Roberto Lineros
(IFIC)
03/07/2014, 15:24
Despite the observational evidences in favor of Dark Matter its nature is still a mystery. Theoretical realizations assume that dark matter is stable and is the lightest state within the dark sector (e.g. WIMPs). The dark sector can also contains even lighter states like dark bosons and fermions. However, those can be completely disconnected from the visible sector except by interaction with...
Dr.
Heidi Schellman
(Northwestern University (United States))
03/07/2014, 15:25
The LBNE beamline complex is designed to provide a neutrino beam of sufficient intensity and energy to meet the goals of the LBNE experiment with respect to long-baseline neutrino oscillation physics. Presented in this talk will be the issues related to the baseline design from the physics, beam power (>1 MW), lifetime, and radiological requirements. Potential future
upgrades to the beamline...
Dr.
Pavel Krokovny
(Budker Institute of Nuclear Physics and Novosibirsk State University)
03/07/2014, 15:30
Studies of quarkonium and quarkonium-like states have led to several surprises in understanding the strong interaction phenomena. Most notably, exotic resonances that cannot be accommodated with the conventional quarkonium pictures including $X(3872)$, $Z_c(4430)^\pm$, $Z_b(10610)^\pm$ and $Z_b(10650)^\pm$ have been discovered by Belle. In this presentation, we report recent results from...
Mr.
Matthew Cahill-Rowley
(SLAC National Accelerator Laboratory)
03/07/2014, 15:30
We explore the impact of current (7+8 TeV) and future (14 TeV) LHC searches on the range of viable sparticle spectra within the 19/20 – dimensional pMSSM. Considering both neutralino and gravitino LSPs, we compare our results with simplified model exclusion limits and describe important cases where the pMSSM results differ significantly from the simplified model descriptions. We also consider...
Dr.
MaryCruz Fouz
(CIEMAT)
03/07/2014, 15:35
The CALICE collaboration has developed highly granular calorimeter prototypes to evaluate technologies for experiments at a future lepton collider optimized for particle flow event reconstruction. These technologies include electromagnetic calorimeters with tungsten absorbers and silicon or scintillator active elements, and hadronic calorimeters with steel and tungsten absorbers with...
Dr.
Chang-Seong Moon
(CNRS-Paris and INFN-Pisa)
03/07/2014, 15:35
Result of merging two abstracts:
We present the most recent CDF top quark pairs production cross sections measurements. We also present the test of Standard Model predictions for top quark decaying into b quarks, performed by measuring the ratio R between the top quark branching fraction to b quark and the branching fraction to any type of down quark. The extraction of the CKM matrix...
Dr.
Mark Palmer
(Fermilab)
03/07/2014, 15:40
Muon accelerators offer unique potential for high energy physics applications.
They can provide clean, well-characterized and intense neutrino beams for short- and long baseline oscillation studies – thus providing unmatched measurement precision for key parameters such as the CP-violating phase as well as unique sensitivity to probe for new physics. Two Neutrino Factory concepts, nuSTORM...
Mr.
Yen-Hsun Lin
(IoP, Nat'l Chiao Tung University, Hsinchu, Taiwan)
03/07/2014, 15:42
It has been shown that the self-interaction between dark matter (DM) particles can increase the DM number density inside the Sun. The increasing rate of DM number density by this effect is proportional to the existing DM number density inside the Sun. We demonstrate that this effect can counteract DM evaporations in the regime of small DM mass. Consequently, the critical mass for DM...
Mrs.
Elisa Fioravanti
(INFN Ferrara)
03/07/2014, 15:45
The B factories provide a unique playground for studying the properties of conventional and exotic quarkonium states which are produced through various mechanism.
We report on a variety of recent results obtained using the full data set collected with the BABAR detector at the PEPII e+e- collider.
In particular, we present measurements of the prompt production of J/psi or psi(2S) in...
Mr.
Roger Caminal Armadans
(Institut de Física d'Altes Energies (IFAE))
03/07/2014, 15:45
In R-parity violating supersymmetric scenarios sparticles can be produced individually or in pairs
with rates that are detectable at the LHC. This talk presents recent results from searches for resonant
production and R-parity violating prompt signatures in multi-lepton and multi-jet final states in the
data sample recorded by the ATLAS and CMS detectors.
Prof.
Regina Demina
(Rochester)
03/07/2014, 15:55
Result of merged abstracts:
We present the most recent measurement of the top quark pair cross section with the D0 detector at the Tevatron proton-antiproton collider in the lepton plus jets and dilepton channels using the full D0 Run II data corresponding to an integrated luminosity of 9.7/fb. We use the measured inclusive cross section to extract the top quark mass via the tt(bar) cross...
Prof.
Dario Barberis
(Università e INFN Genova)
03/07/2014, 16:00
ATLAS Computing challenges before the next LHC run
On behalf of the ATLAS Collaboration
ATLAS software and computing is in a period of intensive evolution. The current long shutdown presents an opportunity to assimilate lessons from the very successful Run 1 (2009-2013) and to prepare for the substantially increased computing requirements for Run 2 (from spring 2015). Run 2 will bring a...
Prof.
Jim Musser
(Indiana university)
03/07/2014, 16:00
NOvA, the NuMI Off-Axis electron Neutrino Appearance experiment is designed to carry out studies of numu->nue oscillation, char-
acterized by the mixing angle theta-13. A complementary pair of detectors have been constructed roughly 14
mrad off the beam axis to optimize the purity of the electron neutrino signal at the far detector against neutral current backgrounds. The far detector is...
Prof.
Michael Klasen
(Institute for Theoretical Physics, University of Münster)
03/07/2014, 16:00
The dark matter relic density has been measured by PLANCK and its predecessors with an accuracy of about 2%. We present theoretical calculations with DM@NLO in NLO SUSY QCD and beyond, which allow to reach this precision for gaugino and squark (co-)annihilations, and use them to scan the phenomenological MSSM for viable regions, applying also low-energy, electroweak and hadron collider constraints.
Dr.
Vladimir Druzhinin
(Novosibirsk State University / BINP)
03/07/2014, 16:00
The clean environment of e+e- annihilation at the center-of-mass energy of about 10 GeV allows precise studies of several aspects of hadron production both in exclusive and inclusive processes.
Precise measurement of exclusive e+e- -> hadrons cross sections are needed to improve the theory prediction of the muon anomalous magnetic moment, and for shedding light on the current ~3.5 sigma...
Dr.
Pablo Martinez Ruiz Del Arbol
(ETH Zürich, Switzerland)
03/07/2014, 16:05
In this talk, the latest results from CMS on searches for beyond the Standard Model physics in final states with 2, 3, 4 (or more) leptons and with photons are presented using 20/fb of data from the 8 TeV LHC run. A variety of complementary final state signatures and methods are used to probe new physics.
Prof.
Kenneth Long
(Imperial College London)
03/07/2014, 16:05
Muon beams of low emittance provide the basis for the intense,
well-characterised neutrino beams necessary to elucidate the physics
of flavour at the Neutrino Factory and to provide lepton-anti-lepton
collisions at the Muon Collider at energies of up to several TeV.
The International Muon Ionization Cooling Experiment (MICE) will
demonstrate ionization cooling; the technique by...
Dr.
Riccardo Paramatti
(INFN - Rome)
03/07/2014, 16:15
The CMS scintillating lead-tungstate calorimeter was designed to operate for at least ten years at the LHC, assuming an instantaneous luminosity of 2x10^34 cm^2/s. According to our measurements, the detector has performed according to design specifications and will survive with excellent performance through the lifetime of the LHC. However, plans for an upgrade of the LHC (the High Luminosity...
Dr.
Simon Head
(University of Birmingham)
03/07/2014, 16:15
Result of merged abstracts:
In proton-proton collisions at the LHC, pairs of top and anti-top quarks are expected to be
mostly produced through gluon fusion. Making use of the large number of top quark pairs collected in the 7 TeV data, we present measurements of the spin correlation between top and anti-top quarks using several variables and discuss their sensitivity to new physics. In...
Dr.
Min-Zu Wang
(Taiwan National University)
03/07/2014, 16:15
Production of baryons in B decays, in $\Upsilon(nS)$ decays and in $e^+ e^- \to
q\bar{q}$ continuum processes can play a key role to improve our understanding of strong interaction and hadron dynamics. Moreover, inclusive anti-deutron production rate from hadronization process can shed light in searching for dark matter annihilation in cosmic ray anti-deuterons. In this presentation, we...
Prof.
Sankagiri Umasankar
(Indian Institute of Technology Bombay)
03/07/2014, 16:15
The moderately large value of theta13, measured recently
by reactor experiments, is very welcome
news for the future neutrino experiments. In particular,
the NOvA experiment, with 3 years of neutrino run followed
by an equal anti-neutrino run, will be able to
determine the mass hierarchy if one of the following
two favourable combinations is true:
normal hierarchy with the CP phase in...
Prof.
Graciela Gelmini
(University of California, Los Angeles (UCLA))
03/07/2014, 16:18
The halo independent comparison of direct dark matter detection data eliminates the need to make any assumption on the uncertain local dark matter distribution and is complementary to the usual data comparison which required assuming a dark halo model for our galaxy. The method, initially proposed for WIMPs with spin-independent contact interactions, has been generalized to any other...
Dr.
SeungCheon Kim
(Cornell University)
03/07/2014, 16:20
We are developing the fast muon kicker for the muon g-2 experiment at Fermilab. The kicker is a pulsed magnet that provides the transverse kick to the muon particles required to direct them onto the stable (magic radius) orbit of the storage ring. To provide the right kick and maximize the storage efficiency of muons, the magnetic pulse generated from the kicker should have ,approximately, 250...
Dr.
Luca Fiorini
(IFIC / U. Valencia)
03/07/2014, 16:20
Events containing several leptons are useful probes of new
phenomena due to the low background from Standard Model processes.
We look for anomalous production of prompt like-sign leptons or events with
three or more leptons, as well as search for excited leptons, heavy leptons
and heavy neutrinos. Searches for lepton-flavor violation are also presented.
The searches use data recorded in...
Mr.
Shuangshi Fang
(Inistitute of High Energy Physics, CAS, China)
03/07/2014, 16:30
Based on the world’s largest samples of J/psi, psi(3686) decays, as
well as the data taken around the peak of Y(4260) resonance collected
at the BESIII detector, the progresses on the hadron spectroscopy are
presented, including the PWA of J/psi radiative decays, eta and eta’
physics, and observations of charmonium-like Zc states.
Dr.
Zelimir Djurcic
(Argonne National Laboratory)
03/07/2014, 16:30
LBNE (Long-Baseline Neutrino Experiment) is an accelerator-based neutrino oscillation experiment. LBNE will produce a muon-neutrino beam using protons from Fermilab's Main Injector and will detect electron-neutrino appearance and muon-neutrino disappearance using a Liquid Argon TPC located at a distance of 1300 km at Sanford Underground Research Facility in South Dakota. The primary physics...
Dr.
Sergei Nikitin
(Budker Institute of Nuclear Physics)
03/07/2014, 16:35
At the VEPP-4M collider the record accuracy of 10-6 of an absolute beam energy calibration was achieved with the resonant depolarization technique in the energy range including the J/psi, psi(2S), psi(3770) resonances as well as the tau-lepton production threshold. This report discusses the equipments, methods and results.
Dr.
Sergo Jindariani
(Fermi National Accelerator Lab., United States)
03/07/2014, 16:35
Result of merged abstracts:
Measurements are presented of the properties of top quarks in pair production from proton-proton collisions at the LHC. The data were collected at pp centre-of-mass energies of 7 and 8 TeV by the CMS experiment during the years 2011 and 2012. The charge asymmetry is measured using the difference of the absolute rapidities of the reconstructed top and anti-top...
Seth Cooper
(University of Alabama)
03/07/2014, 16:35
In preparation for Run 2 (2015) and Run 3 of the LHC (2019), the CMS hadron calorimeter has begun a series of ambitious upgrades. These include new photodetectors in addition to improved front-end and back-end readout electronics. In the hadron forward calorimeter, the existing photomultiplier tubes are being replaced with thinner window, multi-anode readout models, while in the central...
Mr.
Paul Lujan
(Princeton University)
03/07/2014, 16:35
The most recent searches for long-lived particles at CMS is presented. Searches for displaced jets, displaced leptons, displaced tops, heavy stable charged particles, and stopped particles are among those discussed. A variety of models are constrained by these searches, ranging from hidden valleys to split supersymmetry.
Dr.
Pedro Ruiz-Femenia
(IFIC, Valencia)
03/07/2014, 16:36
We discuss the calculation of Sommerfeld enhancements on the neutralino LSP relic abundance calculation for heavy neutralino dark matter including co-annihilations of nearly mass-degenerate neutralino and chargino states. A newly developed EFT framework enables us to consider for the first time all (off)-diagonal potential and annihilation matrices including P- and next-to-next-to-leading...
Dr.
Tatyana Dimova
(BINP/NSU Novosibirsk Russia)
03/07/2014, 16:45
The recent results on e+e- ->hadrons cross section obtained with the SND
and CMD3 detectors at the VEPP-2000 collider in the energy range
up to 2 GeV are presented. The following processes were studied:
e+e- ->pi+pi-, K+K-, pi+pi-pi0, pi+pi-pi0pi0, eta pi+pi-,
omega eta, eta gamma, etc. The results on measured cross sections
are important from the point of view of their contribution...
Vyacheslav Galymov
(IPNL, CNRS/IN2P3)
03/07/2014, 16:45
The LAGUNA and LAGUNA-LBNO consortia have performed two detailed design studies from 2008 to 2014 to define the optimal combination of baseline and detector technology for the next generation neutrino observatory. Starting from seven sites and three detector technologies we have prioritized our options and selected the Pyhäsalmi mine in Finland, 2300 km from CERN at 1400 m depth, using a...
Mr.
Ruslan Asfandiyarov
(University of Geneva)
03/07/2014, 16:50
The Electron-Muon Ranger (EMR) is a totally active scintillator detector installed in the muon beam of the Muon Ionization Cooling Experiment (MICE) - the R&D project for the future neutrino factory. It is aimed at measuring properties of low energy beam composed of muons, electrons and pions performing the identification particle by particle. The EMR is made of 48 intersecting layers. Each...
Dr.
Sonja Orrigo
(IFIC Valencia)
03/07/2014, 16:54
The goal of several ongoing and future direct detection experiments is to discover the dark matter present in our galactic halo in the form of Weakly Interacting Massive Particles (WIMPs). These experiments attempt to isolate from various backgrounds the signal of nuclear recoils from the elastic scattering of WIMPs with the target nuclei inside the detector. The expected signal (for a given...
Dr.
Raoul Rontsch
(Fermilab)
03/07/2014, 16:55
The LHC has observed top-pair production in association with electroweak gauge bosons in the 7 TeV dataset, with many more events expected at the higher energy and luminosity run. This allows the EW interactions of the top, previously only constrained indirectly, to be investigated directly. I will present a calculation of ttbar+Z production to NLO in QCD, including decays of the top and Z...
Dr.
Miao He
(Institute of High Energy Physics, Beijing)
03/07/2014, 17:00
The Daya Bay Reactor Antineutrino Experiment reported the first observation of the non-zero neutrino mixing angle θ13 using the first 55 days of data. It has also provided the most precise measurement of θ13 with the extended data to 217 days. Daya Bay will keep running for another 3 years or so. There is about 100TB raw data produced per year, as well as several copies of reconstruction data...
Dr.
Hermine K Woehri
(CERN)
03/07/2014, 17:00
Studies of heavy flavour production are very important to improve our understanding of QCD and hadron formation, given that the heavy quark masses allow the application of theoretical tools less sensitive to nonperturbative effects.
This talk presents ATLAS and CMS heavy flavour results obtained in pp collisions, at 7 and 8 TeV, placing emphasis on the most recent measurements. In...
Mr.
hirohisa tanaka
(UBC/IPP)
03/07/2014, 17:00
Hyper-Kamiokande (Hyper-K), a proposed one-megaton water cherenkov detector to be built in Japan, is the logical continuation of the highly successful program of neutrino (astro)physics and proton decay using the water Cherenkov technique. Hyper-K will search for CP violation in neutrino oscillations associated with the irreducible phase delta in the lepton mixing matrix using the neutrino...
Dr.
Camille Theroine
(European Spallation Source)
03/07/2014, 17:05
Neutral particle oscillations have proven to be extremely valuable probes of fundamental physics. Kaon oscillations provided us with our first insight into CP-violation, fast Bs oscillations provided the first indication that the top quark is extremely heavy, B oscillations form the most fertile ground for the continued study of CP-violation, and neutrino oscillations suggest the existence of...
Mr.
Jan Kretzschmar
(University of Liverpool)
03/07/2014, 17:05
Models with extra spatial dimensions have been proposed to explain
the large apparent hierarchy between the Electroweak and Planck scales.
Such models predict a host of different new phenomena. For example, classical and quantum
black holes with spectacular signatures have been searched for with the full 8 TeV
dataset. Extra spatial dimensions can also manifest themselves in a number...
Dr.
Mojtaba Mohammadi Najafabadi
(IPM)
03/07/2014, 17:10
We present searches for the top quark flavor-changing neutral current (FCNC) interactions by the CMS experiment. The FCNC searches have been performed in the vertices of tqZ, tqg, tqH and tqA in decay and production processes. The results are based on the data collected from proton proton collisions at the LHC at a centre-of-mass energies of 7 and 8 TeV.
Mr.
Sebastian Grinstein
(ICREA/IFAE-Barcelona)
03/07/2014, 17:10
The ATLAS Forward Proton (AFP) is a project to upgrade the ATLAS experiment with additional 3-D silicon detectors, placed at ±206 and ±214 meters on both sides of the ATLAS experiment, allowing measurements of the forward protons scattered diffractively or electromagnetically and with the remarkable capability to tag and measure both protons in exclusive central diffractive/elmg processes. The...
Dr.
Dorota Sokolowska
(University of Warsaw)
03/07/2014, 17:12
Multi-scalar extensions of the Standard Model can accommodate a viable Dark Matter candidate and modifications of the Higgs decay rates, particularly into two photons. One of the simplest choices for the extended scalar sector is the Inert Doublet Model, i.e. the Standard Model with an additional inert scalar doublet. LHC measurements of the decay of the SM-like Higgs boson into two photons...
Dr.
Don Lincoln
(Fermilab)
03/07/2014, 17:15
We present measurements of the production cross section of prompt J/psi mesons, as well as the cross section of simultaneous production of two prompt J/\psi mesons, in proton-antiproton collisions at sqrt(s)=1.96 TeV using 8.1 fb-1 of Tevatron data collected by the D0 experiment. The latter cross section is separated into contributions due to single parton and double parton (DP) scatterings....
Dr.
Marcos Dracos
(IPHC/IN2P3 Strasbourg)
03/07/2014, 17:15
The European Spallation Source (ESS) linac with 5 MW proton power has the potential to become the proton driver of - in addition to the world’s most intense pulsed spallation neutron source - the world’s most intense neutrino beam. The physics performance of that neutrino Super Beam in conjunction with a megaton Water Cherenkov neutrino detector installed 1000 m down in a mine at a distance of...
Dr.
Jong Soo Kim
(IFT Madrid)
04/07/2014, 09:00
In the first three years of running, the LHC has delivered a wealth of new data that is now being analysed. With over 20 fb−1 of integrated luminosity, both ATLAS and CMS have performed many searches for new physics that theorists are eager to test their model against. However, tuning the detector simulations, understanding the particular analysis details and interpreting the results can be a...
Corrinne Mills
(University of Edinburgh)
04/07/2014, 09:00
A review of the latest results on the measurment of the cross sections and couplings of the Higgs boson
in the WW decay channel with the ATLAS detector is presented,
using approximately 25 fb-1 of pp collision data collected at 7 TeV and 8 TeV in 2011 and 2012.
Dr.
Uta Bilow
(TU Dresden)
04/07/2014, 09:00
Netzwerk Teilchenwelt is a German network of HEP scientists, high school students, and teachers in direct contact with CERN. It aims at sharing the excitement of particle and astroparticle physics research. Scientists from 24 research institutes work with students and teachers to bring cutting edge research to the classroom. Programmes in particle physics and astroparticle physics are offered...
Carmen Carmona
(UC Santa Barbara)
04/07/2014, 09:00
LUX (Large Underground Xenon) is a dark matter direct detection experiment deployed at the 4850' level of the Sanford Underground Research Facility (SURF) in Lead, SD, operating a 370 kg dual-phase xenon TPC. We have recently published the results of the first WIMP search run, presenting the analysis of 85.3 live-days with a fiducial volume of 118 kg, taken during the period of April to August...
Dr.
Pier Monni
(University of Oxfored)
04/07/2014, 09:00
I review recent developments in resummation in perturbative QCD, with special regards to its application to the computation of observables involving jets and jet vetos.
Mr.
Marek Chojnacki
(University of Copenhagen, Niels Bohr Institute)
04/07/2014, 09:00
The combination of multiple particle identification systems along with the excellent tracking capabilities makes ALICE a unique tool to study QCD matter at high-temperature and density. The measurements of light flavor hadron production and multi-particle correlations over a broad transverse momentum ($p_{\mathrm{T}}$) range from 100 MeV/c up to 20 GeV/c, are the main soft probes of the...
Dr.
Hiroyuki Sekiya
(ICRR, University of Tokyo)
04/07/2014, 09:00
Recently the concern with the effect of matter on the neutrino oscillation has been growing, because the possibility of mass hierarchy determination by next generation experiments through the matter effect has been recognized.
We report an indication that the elastic scattering rate of solar B8 neutrinos with electrons in the Super-Kamiokande detector is larger when the neutrinos pass...
Ken-ichi Kanazawa
(High Energy Accelerator Reseach Organization)
04/07/2014, 09:00
SuperKEKB is a major upgrade of the asymmetric B-factory collider, KEKB, to provide a 40 times higher luminosity than that achieved at KEKB. The design of SuperKEKB adopted the nano-beam scheme for the collision of two beams which was originally proposed for Italian Super B Factory. This scheme uses a nano-scale beam size (the vertical size is 50 nm and horizontal size is ~ 0.01 mm) and a...
Julia Haser
(Max-Planck-Institut fuer Kernphysik)
04/07/2014, 09:15
The Double Chooz reactor antineutrino experiment aims for a precision measurement of the neutrino mixing angle $\theta_{13}$. Located at the Chooz nuclear power plant in France, it observes an energy dependent deficit in the neutrino spectrum, currently with one detector filled with gadolinium-loaded liquid scintillator at a baseline of 1.05\,km. The past Double Chooz publications featured...
Mr.
Cristian Bosch Serrano
(University of Valencia)
04/07/2014, 09:15
We prove that the present experimental constraints are already enough to rule out the possibility of the 125 GeV Higgs found at LHC being the second lightest Higgs in a general MSSM context, even with explicit CP violation in the Higgs potential. Contrary to previous studies, we are able to eliminate this possibility analytically with a relatively small number of observables. We show that the...
Pietro Govoni
(Milano-Bicocca INFN and University)
04/07/2014, 09:15
A search for the Higgs boson has been carried out in the Higgs to WW decay mode with the CMS detector at the LHC collider, where each W decays into an electron or photon and a neutrino. The analysis is based on pp collision data collected at centre-of-mass energies of 7 and 8 TeV, corresponding to integrated luminosities of 5/fb and 20/fb, respectively. The analysis strategy and measurements...
Prof.
Peter Watkins
(University of Birmingham)
04/07/2014, 09:15
The Particle Physics group at the University of Birmingham has tried many different formats for Outreach competitions over recent years. We have found that a ‘Cascade’ competition is a very efficient way to introduce Particle Physics concepts and experiments to a wide range of students. Small groups of students research, prepare and deliver a short presentation to other students.
We will...
Dr.
Elias Lopez Asamar
(Universidad Autonoma de Madrid)
04/07/2014, 09:19
Gravitational effects observed at different astronomical scales indicate that ~85% of the matter content of the Universe consist of dark matter (DM) whose particle nature remains unknown. Hints from direct and indirect measurements, together with some theoretical scenarios, motivate the interest in low-mass (< 30 GeV/c^2) weakly-interacting massive particles (WIMPs) as DM candidates.
The...
Dr.
Denis Derkach
(University of Oxford)
04/07/2014, 09:20
The Unitarity Triangle (UT) analyses within and beyond the SM
are powerful tools to summarise the state of the art and explore
the possibilities for future new physics (NP) searches.
We present the update of the Unitarity Triangle analysis
in a scenario beyond the Standard Model. Combining all
available experimental and theoretical information on
DF=2 processes and using a...
Dr.
Jovan Milosevic
(University of Belgrade, Faculty of Physics and Vinca Institute of Nuclear Sciences)
04/07/2014, 09:20
Measurements of soft particle production probe the collectivity of the medium created in heavy-ion collisions. This presentation focuses on measurements of two- and multi-particle angular correlations in pPb and PbPb collisions. Particular emphasis is placed on studies of long-range correlations in high multiplicity pPb collisions.
Prof.
Jie Gao
(Institute of High Energy Physcis)
04/07/2014, 09:25
In this paper the status of CEPC/SppC will be reviewed covering project goals, accelerator design study status, time line, key design drivers, and accelerator physics challenges, et cetera.
Francesco De Lorenzi
(Iowa State University)
04/07/2014, 09:25
The identification and study of jets originated from the hadronic decays of massive particles, like vector bosons or top quark provide a direct test of QCD calculations of gluon and quark radiation and validate novel techniques of jet shapes and jet substructure for reducing the sensitivity to soft QCD and to multiple proton-proton collisions. The measurement of the cross-section of high...
Prof.
Kourkoumelis Christine
(University of Athens and IASA)
04/07/2014, 09:30
The “ HYPATIA” (HYbrid Pupil’s Analysis Tool for Interactions in ATLAS) is a tool which has been created by the authors of this abstract and has been evolving over a number of years. Apart from the IPPOG’s International Masterclass downloadable HYPATIA version, there is an online version which now exists in the form of a webapp. All data from the ATLAS experiment at the Large Hadron Collider...
Dr.
Paolo Francavilla
(CNRS - LPNHE and ILP)
04/07/2014, 09:30
Since the discovery of a Higgs boson by the ATLAS and CMS experiments at the LHC, the emphasis has shifted towards
measurements of its properties and the search for less sensitive channels in order to determine whether the
new particle is the Standard Model (SM) Higgs boson. Of particular importance is the direct observation of the
coupling of the Higgs boson to b-quarks. In this talk a...
Dr.
Wei Wang
(College of William and Mary, Sun Yat-Sen University)
04/07/2014, 09:30
The Daya Bay reactor neutrino experiment (Daya Bay) is one of the three current-generation short-baseline reactor neutrino experiments designed to measure the lastly known neutrino mixing angle theta13. Its unique design of eight identical 20t liquid scintillator (LS) antineutrino detectors (AD) at the three near and far experimental sites does not only make it the most sensitive theta13...
Mr.
Yohan Ricci
(Queen's University)
04/07/2014, 09:38
Dark Matter (DM) is thought to make up ∼ 84.5% of the matter content of the universe. It is a key ingredient of the standard model of cosmology (ΛCDM) and could provide a window to new theories beyond the standard model of particle physics. There has been much recent interest in low-mass (O(5 GeV)) Weakly Interacting Massive Particles, as predicted by certain supersymmetric models and other...
Dr.
Avelino Vicente
(Université de Liège)
04/07/2014, 09:40
We present a new kit for the study of flavor observables beyond the standard model. In contrast to previous flavor codes, FlavorKit is not
restricted to a single model, but can be used to obtain predictions for flavor observables in a wide range of models (SUSY and non-SUSY).
FlavorKit can be used in two different ways. The basic usage of FlavorKit allows for the computation of a large...
Prof.
Mariusz Przybycien
(AGH University of Science and Technology (Poland))
04/07/2014, 09:40
Measurements of low-pT (< 5 GeV) particle production have provided valuable insight on the production and evolution of the quark-gluon plasma in Pb+Pb collisions at the LHC. In particular, measurements of elliptic and higher order collective flow imprinted on the azimuthal angle distributions of low-pT particles directly probe the strongly-coupled dynamics of the quark-gluon plasma and test...
Dr.
Keith Matera
(University of Illinois at Urbana)
04/07/2014, 09:40
Studies of associated production of a vector bosons with heavy quarks (b/c) provide important tests of perturbative quantum chromodynamics calculations, important constraints on parton distribution functions, and good understanding of major backgrounds in Higgs studies and searches for new phenomena. We present several measurements of vector boson with heavy quark processes production at the...
Dr.
Ignasi Rosell
(Universidad CEU Cardenal Herrera & IFIC)
04/07/2014, 09:45
We study strongly coupled models of electroweak symmetry breaking with a light Higgs boson. We use a resonance effective Lagrangian with bosonic massive resonances together with the Standard Model degrees of freedom, including a light Higgs. We consider constraints from the phenomenology and from the assumed high-energy behavior of the underlying theory. This resonance effective theory can be...
Dr.
Liang Zhan
(Institute of High Energy Physics)
04/07/2014, 09:45
After the discovery of the large neutrino mixing angle 13, the next generation neutrino experiments focus on the measurement of the neutrino mass hierarchy and the leptonic CP violating phase. JUNO, a next generation reactor antineutrino experiment, was proposed to determine the neutrino mass hierarchy independent of the CP phase. We studied the sensitivity and found the mass hierarchy can be...
Ms.
Caterina Vernieri
(Scuola Normale Superiore, Pisa)
04/07/2014, 09:45
A search for the Higgs boson has been carried out in the Higgs to bb channel with the CMS detector at the LHC collider. The production modes used are the associated VH production, the VBF production and the production in association with top quarks. The analyses are based on pp collision data collected at centre-of-mass energies of 7 and 8 TeV, corresponding to integrated luminosities of 5/fb...
Mrs.
Maiken Pedersen
(University of Oslo)
04/07/2014, 09:45
Sharing ATLAS data and research with young students
Maiken Pedersen, Farid Ould-Saada, on behalf of the ATLAS Collaboration and IPPOG International Masterclasses
In recent years the International Masterclasses (IMC) featured the use of real experimental data as produced by the LHC and collected by the detectors. We present ATLAS-based educational material using these data allowing...
Dr.
Rogelio Tomas Garcia
(CERN)
04/07/2014, 09:50
A new international study has just been launched to design a hadron collider with a centre-of-mass energy of the order of 100 TeV in a new 80-100 km tunnel as a long-term goal. The design study includes a 90-350 GeV lepton collider, seen as a potential intermediate step, and an ep option. This paper reports on the overall parameters and preliminary optics designs with special emphasis on the...
Mr.
Roel Aaij
(Nikhef)
04/07/2014, 09:55
The Bs meson provides an ideal laboratory for measurements of CP violation and searches for CPV beyond the Standard Model. We present recent LHCb results on measurements of the Bs mixing phase using Bs→J/ψKK and J/ψππ decays.
Dr.
Gavin Grant Hesketh
(UCL)
04/07/2014, 09:55
Productions of light and heavy-flavour jets in association with a W or a Z boson in proton-proton collisions are important processes to study QCD in multi-scale environments and the proton parton content. The cross section, differential in several kinematics variables, have been measured with the ATLAS detector in 7 TeV proton-proton collisions and compared to high-order QCD calculations and...
Dr.
Matteo Alfonsi
(Nikhef)
04/07/2014, 09:57
The XENON Collaboration aims at Dark Matter direct detection searching for interactions in a liquid xenon target. The XENON100 detector, a dual phase xenon Time Projection Chamber employing 161 kg of liquid xenon, started the first science run at the Laboratori Nazionali del Gran Sasso in Italy in 2009. It provided as scientific output limits on the spin-independent and spin-dependent...
366.
Data Portfolio: Instructional materials provide particle physics data in high school classrooms
Ms.
Marge Bardeen
(Fermilab)
04/07/2014, 10:00
We discuss Data Portfolio (DP), a new suite of activities that provide experimental particle physics data to high school students and a professional development program for their teachers. DP is a website resource with a broad range of instructional materials that allows teachers to select activities of the correct level and scope for their students. Activities range from introductory to...
Dr.
Maria Zurita
(University of Santiago de Compostela)
04/07/2014, 10:00
The Large Hadron Electron Collider (LHeC) at CERN is a proposed facility for electron-nucleus scattering which will collide electrons of about 60 GeV energy beam, with the LHC heavy ion beams. The kinematic coverage extends beyond previous deep inelastic lepton-ion experiments by nearly four orders of magnitude towards lower $x_{Bj}$ and higher $Q^2$. This contribution reviews the...
Bogumila Swiezewska
(University of Warsaw)
04/07/2014, 10:00
An interplay between the LHC results on the Higgs boson: measurement of the total width, invisible decays branching ratios and especially the signal strength in the decay of the Higgs boson to two photons, and the properties of the Higgs-portal dark matter (DM) in the Inert Doublet Model is analysed. The results are combined with the PLANCK constraints on the DM relic density, and strong...
Dr.
Mattias Blennow
(KTH Royal Institute of Technology)
04/07/2014, 10:00
During the last two years, there has been some confusion in the field on how to assess the sensitivity of future neutrino oscillation experiments to the neutrino mass ordering. A factor of two difference to the common approach has been proposed. We resolve the situation by going back to the basic statistical definitions and apply the results to compare future possibilities of experiments...
Mr.
Giacomo Fedi
(University of Helsinki)
04/07/2014, 10:10
In this talk we present a measurement of the time-dependent CP-violating phase phi_s in the decays of B_s -> J/psi phi. The phase phi_s is the key parameter for the CP-violation of the B_s and anti-B_s system. An angular and proper decay time analysis is applied to the Bs->J/psi phi events. Using a data sample collected by the CMS experiment, the Bs signal candidates are reconstructed and are...
Max Klein
(University of Liverpool)
04/07/2014, 10:15
The Future Circular Collider (FCC) is a proposed facility at CERN to provide 50 TeV protons and 19.7 TeV/nucleon Pb nuclei, and up to 175 GeV electrons and positrons, in a new 80-100 km tunnel. Recently CERN has launched a study which includes the three principal modes of operation: hadron-hadron, electron-electron and hadron-electron (he) collisions. For the 'he' mode, two options exist for...
Masato SHIOZAWA
(Kamioka Observatory, ICRR, University of Tokyo)
04/07/2014, 10:15
Atmospheric neutrinos have been playing important roles in understanding neutrino properties. In Super-Kamiokande, we have been performing precise measurement of the 2-3 mixing angle and mass squared difference predominantly by muon neutrino disappearance. In addition to that, muon to tau neutrino oscillation channel was established by confirming tau neutrino appearance in the atmospheric...
Dr.
Fabio Cossutti
(INFN Trieste)
04/07/2014, 10:15
The production cross section of highly boosted vector bosons (V = W, Z) recoiling against jets is studied, with CMS data, differentially as function of the transverse momentum and angular correlations of the final state particles. The mechanism of production of heavy-flavoured mesons, containing b or c quarks, in association with vector bosons, W or Z, in the Standard Model is only partially...
Aoife Bharucha
(TU Munich)
04/07/2014, 10:15
We calculate with new precision the decays of SUSY particles to Higgs bosons. Using this new calculation we analyze the impact of these decays on current SUSY searches at the LHC as well as the prospects for measurements at a future e+e- collider.
Dr.
Thomas McCauley
(University of Notre Dame)
04/07/2014, 10:15
QuarkNet is an educational program which brings high school teachers and their students into the particle physics research community. The program supports research experiences and professional development workshops and provides inquiry-oriented investigations, some using real experimental data.
The CMS experiment at the LHC has released several thousand proton-proton collision events for...
Dr.
Riccardo Cerulli
(INFN-LNGS)
04/07/2014, 10:16
The DAMA/LIBRA set-up (about 250 kg highly radiopure NaI(Tl)) is
running at the Gran Sasso National Laboratory of the I.N.F.N..
This experiment is mainly dedicated to the investigation of Dark Matter
(DM) particles in the galactic halo by exploiting the model independent
DM annual modulation signature. In its first phase DAMA/LIBRA has collected
data over 7 annual cycles corresponding to...
Elias Coniavitis
(Universität Freiburg)
04/07/2014, 10:20
A review of the latest results on Higgs boson decays to leptons with the ATLAS detector is presented, using approximately 25 fb-1 of pp collision data collected at 7 TeV and 8 TeV in 2011 and 2012.
Mr.
Antoni Aduszkiewicz
(University of Warsaw)
04/07/2014, 10:20
Evidence for the onset of deconfinement in central Pb+Pb collisions
was reported by NA49 in fixed target measurements at beam momentum
30A GeV/c. This observation motivated the NA61/SHINE program started
in 2009 at CERN SPS, which, in particular, aims to study properties
of the onset of deconfinement by measurements of hadron production
in proton-proton, proton-nucleus and nucleus-nucleus...
Dr.
Silvia Verdú-Andrés
(Brookhaven National Laboratory (BNL))
04/07/2014, 10:25
The numerous parasitic encounters in the LHC are mitigated by introducing a crossing angle between beams. Crab cavities would allow restoring head-on collisions at the interactions point, thus increasing the geometric luminosity. Crab cavities would also offer a mechanism for luminosity leveling.
KEKB was the first facility to implement the crab crossing technique in 2007, for the...
Dr.
Leonid Gladilin
(Joint Institute for Nuclear Research (JINR))
04/07/2014, 10:25
The ATLAS detector at the LHC is collecting - among others - a large statistics of Bs and Lambda_b decays, allowing to study their production and decay properties. ATLAS has studied the different amplitudes contributing to the decay Bs -> J/psi phi (mu+mu-K+K-) with a combined analysis of decay time and angular correlations and using initial flavour tagging. The CP-violating phase phi_s is...
Ms.
Ana Trisovic
(CERN, Geneva, Switzerland)
04/07/2014, 10:30
The LHCb experiment is a general purpose spectrometer in the forward region optimized for precision studies of beauty and charm hadron properties. The volumes of data produced by the LHC make it possible to perform such precision measurements with only a fraction of the total LHCb dataset, making it an ideal playground for developing new types of masterclass exercises. We present here LHCb's...
Dr.
Kenneth Clark
(University of Toronto)
04/07/2014, 10:30
The Precision IceCube Next Generation Upgrade (PINGU) is a proposed IceCube in-fill array designed to measure the neutrino mass hierarchy using atmospheric neutrino interactions in the ice at the South Pole. PINGU will have a neutrino energy threshold of a few GeV with a multi-megaton effective volume. We present PINGU's expected sensitivity to the hierarchy with an optimized geometry and...
Mrs.
María Luisa López Ibáñez
(Universidad de Valencia)
04/07/2014, 10:30
We analyze the LHC experimental results in a general MSSM setup including CP violation where the resonance found at 125 GeV corresponds to the lightest Higgs. In this framework, we rule out the possibility of having a Higgs mass spectrum aside from that corresponding to the decoupling limit. LHC constraints in Higgs decay to tau-tau, together with that of gamma gamma, are enough to reach this...
Prof.
Emidio Gabrielli
(University of Trieste and NICPB Tallinn)
04/07/2014, 10:35
We compare the impact of top-quark spin polarization effects in Higgs (H) boson production in association with top-quark pairs and in corresponding backgrounds at the LHC. Because of the spin-zero nature of the Higgs boson, one expects, in the chiral limit for the top quarks, a substantial complementarity in tt(bar) spin correlations for a Higgs decaying into fermions/gauge-bosons and tt(bar)...
Mr.
Andrea Carlo Marini
(ETH Zürich (Switzerland))
04/07/2014, 10:35
We present differential cross-section measurements of inclusive photon production, photon+jet production, and diphoton production in pp collisions based on data recorded by the CMS detector at the LHC. The associated production of a photon and one or more jets in pp collisions provides a direct probe into the hard QCD interaction, is sensitive to gluon densities in the proton, and is a major...
Prof.
Juan Collar
(U. Chicago)
04/07/2014, 10:35
We will discuss the status of CoGeNT and C-4, searches for low-mass WIMPs below 10 GeV/c^2. The performance of the first C-4 detector will be presented and compared to the previous generation of p-type point contact germanium detectors, employed in CoGeNT. First results from a sophisticated energy-time analysis of the 3.4 year CoGeNT dataset will be shown. This analysis considers not only the...
Mr.
Bernard Riemer
(Oak Ridge National Laboratory)
04/07/2014, 10:40
Target designs used in accelerator facilities that serve to produce useful particles for physics or materials research are being pushed to accept increasing levels of beam power to enable new regimes of study. The field of high power targets spans a range of applications, including neutron sources, neutrino factories, radioactive ion beams sources, isotope production and materials irradiation...
Dr.
Chin-Hao Chen
(RIKEN BNL Research Center)
04/07/2014, 10:40
The PHENIX experiment at the Relativistic Heavy Ion Collider has performed a comprehensive set of measurements in d+Au collisions. Observables in d+Au collisions were originally conceived as a control experiment where no quark-gluon plasma is formed and one could isolate so-called cold nuclear matter effects, including nuclear modified parton distributions and parton multiple scattering. ...
Dr.
Liming Zhang
(Syracuse University)
04/07/2014, 10:40
b-hadron decays to J/ψ and light mesons and/or baryons allow to perform studies in the J/ψhh "Dalitz" decay plane. We determine the resonant structure and CP components of B→J/ψKK and ππ, which serve as input to CP violation studies. We also report the observation of new decay modes of the Bc meson and the Λb baryon.
Mr.
Achintya Rao
(CMS Experiment, CERN)
04/07/2014, 10:45
On 4 July 2012, particle physics became a celebrity. Around 1,000,000,000 people (yes, 1 billion) saw rebroadcasts of two technical presentations announcing the discovery of a new boson. The occasion was a joint seminar of the CMS and ATLAS collaborations, and the target audience were particle physicists. Yet the world ate it up like a sporting event.
Roughly two days later, in a parallel...
Prof.
Sanjib Kumar Agarwalla
(Institute of Physics, Bhubaneswar, India)
04/07/2014, 10:45
India-based Neutrino Observatory (INO) is a proposed underground facility in the southern part of India. The project envisage the construction of an underground laboratory with a large cavern of dimensions 132m X 26m X 20m to house a 50 kton magnetized iron tracking calorimeter detector (ICAL) to study atmospheric neutrinos. In addition, two smaller caverns will also be constructed to host...
Dr.
Federico Mescia
(ECM, Universitat de Barcelona)
04/07/2014, 10:45
We study the scattering of longitudinally polarized W bosons in extensions of the Standard Model where anomalous Higgs couplings to gauge sector and higher order O(p^4) operators are considered. These new couplings with respect to the Standard Model should be thought as the low energy remnants of some new dynamics involving the electroweak symmetry breaking sector. By imposing unitarity and...
Dr.
Lily Asquith
(Argonne)
04/07/2014, 10:50
Isolated prompt photons provide a direct probe of short-distance physics, complementary to that provided by measurements of jets or vector-bosons. The data are sensitive to the gluon density of the proton. The inclusive prompt photon cross sections have been measured over a wide range of transverse momenta; the diphoton cross section has also been measured as a function of diphoton mass,...
Dr.
Stefano Davini
(University of Houston)
04/07/2014, 11:30
DarkSide-50 (DS-50) at Gran Sasso underground laboratory, Italy, is a direct dark matter search experiment based on a TPC with liquid argon from underground sources. The DS-50 TPC, with 50 kg of active argon and a projected fiducial mass of >33 kg, is installed inside an active neutron veto based on a boron-loaded organic scintillator. The neutron veto is built inside a water cherenkov muon...
Dr.
Cedric Weiland
(Universidad Autonoma de Madrid)
04/07/2014, 11:30
In previous works (JHEP03(2012)100, JHEP09(2012)015), we have highlighted that the Higgs and Z-mediated penguin diagrams contributing to lepton flavour violating (LFV) observables like tau->3mu are strongly enhanced in the supersymmetric inverse seesaw model. It has recently been pointed out that an error in the literature for the Z-penguins form factors would lead to a non-physical...
Mr.
Matthew Needham Needham
(University of Edinburgh)
04/07/2014, 11:30
The Bs meson provides an ideal laboratory for measurements of CP violation and searches for CPV beyond the Standard Model. We present recent LHCb results on measurements of the Bs mixing phase using the penguin mediated decay Bs→φφ, which is very sensitive to physics beyond the Standard Model.
Jonathan Lewis
(Fermilab)
04/07/2014, 11:30
We present the final combination of the top-quark mass, Mt , performed by the CDF experiment at the Tevatron collider. The combination includes three recently published and two preliminary results from the CDF Run II data collected at 1.96 TeV center of mass collision energy. The analyses use the full Run II samples of 8.7- 9.3 fb-1 of data. The latter measurements are combined with the ...
Dr.
Richard Hollis
(University of California, Riverside)
04/07/2014, 11:30
The PHENIX experiment at the Relativistic Heavy Ion Collider has measured a suite of observables for open and closed heavy flavor
in a variety of collision systems, p+p, d+Au, Cu+Cu, Au+Au, U+U, and at different beam energies. These results indicate substantial
modification in the yields of quarkonia, including J/Psi, Psi', and Upsilon states, and a substantial redistribution in momentum...
Mrs.
Liron Barak
(Weizmann Institute of Science)
04/07/2014, 11:30
Several non-minimal Higgs scenarios, e.g. Two Higgs Doublet Models (2HDM), predict the existence of charged Higgs bosons. This talk describes searches for charged Higgs bosons produced in top quark decays, in association with a top quark, or decaying to a tau lepton and a neutrino using the Run I data collected by the ATLAS detector at the LHC.
Dr.
Noah Oblath
(Massachusetts Institute of Technology)
04/07/2014, 11:30
The Karlsruhe Tritium Neutrino (KATRIN) Experiment aims to measure the neutrino mass using tritium beta decays. KATRIN will carefully determine the shape of the tritium beta-decay spectrum near the endpoint. After collecting three years of data, KATRIN will be able to discover a neutrino mass as small as 350~meV (5$\sigma$), or place an upper limit at 200~meV (90\% CL). The experiment is...
Dr.
Stefano Di Chiara
(University of Helsinki)
04/07/2014, 11:30
In this talk, I will briefly review the triplet extended MSSM, and then show that for a sizable portion of viable parameter space, associated with a large but still perturbative triplet coupling, the model features conspicuously smaller fine-tuning than in the case of MSSM-like couplings. I will then present the results of a fit to Higgs physics data as well as to low energy observables like...
Dr.
Vladimir Chekelian
(MPI for Physics)
04/07/2014, 11:35
Recent results on deep-inelastic scattering at HERA are
presented. The H1 and ZEUS experiments each have determined new
measurements of the proton longitudinal structure function FL, making
use of the HERA data recorded at reduced centre-of-mass energies. The
results are in agreement with each other and with predictions derived
from QCD fits. The region of high x is explored in a...
Dr.
Jie Lu
(IFIC, University of Valencia)
04/07/2014, 11:45
The rare decays $B_{s,d}^0 \to \ell^+\ell^-$ are analyzed within the general framework of the aligned two-Higgs doublet model. We present a complete one-loop calculation of the relevant short-distance Wilson coefficients, giving a detailed technical summary of our results and comparing them with previous calculations performed in particular limits or approximations. We investigate the impact...
Oleg Brandt
(U Heidelberg - KIP)
04/07/2014, 11:45
We report a measurement of the mass of the heaviest known standard model particle, the top quark, performed by the D0 experiment at the Fermilab Tevatron Collider. We present the most precise D0 measurement employing the matrix element technique in the lepton+jet channel. For this measurement the full D0 data set corresponding to an integrated luminosity of 9.7 fb^-1 is used. We also discuss...
Dr.
Elena Ferri
(Uiversità Milano-Bicocca)
04/07/2014, 11:45
Neutrino oscillation experiments have proven that neutrinos are massive particles, nevertheless the
assessment of their absolute mass scale is still an outstanding challenge in today particle physics
and cosmology. The experiments dedicated to effective electron-neutrino mass determination are
the ones based on the study of nuclear processes involving neutrino, like single beta decay...
Dr.
Christian Veelken
(LLR/Ecole Polytechnique)
04/07/2014, 11:45
Several searches for Higgs bosons have been carried out with the CMS detector at LHC. The analyses are based on pp collision data collected at centre-of-mass energies of 7 and 8 TeV, corresponding to integrated luminosities of 5/fb and 20/fb, respectively. Some of them can be interpreted in the framework of the MSSM and NMSSM Supersymmetric models. Given that no evidence of Higgs bosons, in...
Prof.
Hyun Su Lee
(Ewha Womans University)
04/07/2014, 11:48
Although an observation of the dark matter is higly interesting in physics community, an observation of the WIMP, strong candidates of dark matter particles, claimed by DAMA/LIBRA experiment has not yet been clearly proved. Many advanced compelling experiments have observed null signals claiming rejections of the DAMA/LIBRA observation, but still some model dependent interpretations are...
Dr.
Katerina Lipka
(DESY)
04/07/2014, 11:50
We present recent CMS results related to constrainting parton distribution functions. Results are based in recent jet measurements performed with 2011 data taken at center-of-mass energy of 7 TeV and 2012 data taken at 8 TeV and on associated W+charm production, which probes the strange quark in the proton at leading order. Recent CMS measurements of associated W+charm production and W muon...
Dr.
Ernesto Arganda
(Departamento de Física Teórica, Universidad de Zaragoza)
04/07/2014, 11:50
In the inverse seesaw, the smallness of the neutrino masses is related to the smallness of a lepton number violating mass term whilst the seesaw scale is naturally close to the TeV. This allows for large effects in lepton flavor and universality violating observables as was previously demonstrated. With the ongoing and planned measurements of the Higgs boson properties at the LHC, we found...
Sandra Zavatarelli
(INFN - Genova)
04/07/2014, 12:00
The first phase of the Borexino experiment, currently running at the Laboratori del Gran Sasso in Italy, has been completed in 2010, and after a successful purification campaign which have further brought down the background levels, a second data taking phase is now in progress, started in October 2011.
In this talk the, after recalling the main features of the detector, the final results of...
Dr.
Marko Petric
(Jozef Stefan Institute)
04/07/2014, 12:00
We report measurements of the branching fraction (BF) and CP asymmetry ($A_{CP}$) for three rare charmless decays $B^0 \to \pi^0 \pi^0$, $B^0 \to \eta^0 K^{*}(892)^{0}$ and $B^+ \to \bar{K}^{*}(892)^{0} K^{*}(892)^{+}$. Previous measurements of the BF($B^0 \to \pi^0 \pi^0$) are significantly larger than theoretical expectations. The measured BF and $A_{CP}$ in this mode are vital for the...
Dr.
Roman Nevzorov
(University of Adelaide)
04/07/2014, 12:00
We study the decays of the SM-like Higgs state within
the $E_6$ inspired supersymmetric (SUSY) model based
on the SM gauge group together with an extra $U(1)_{N}$
gauge symmetry under which right--handed neutrinos have
zero charge. To ensure anomaly cancellation and gauge
coupling unification the low energy matter content of
this SUSY model involves three $27$ representations of...
Prof.
Steven Lowette
(Vrije Universiteit Brussel)
04/07/2014, 12:00
The search for Dark Matter at CMS is presented. Monojet, monophoton, and monolepton final states are all considered, as well as dark matter particles that are produced in association with top quarks. The interpretation of these results as a WIMP are discussed.
Mr.
Kaven Yau Wong
(Physikalisches Institut Universitaet Bonn)
04/07/2014, 12:00
Measurements of the top-quark mass with the ATLAS detector in proton-proton collisions are presented. Events where top quark pairs are produced are selected and the top mass distribution is derived from the reconstructed top decay products. The top mass is then measured with the template method. All decay modes of the top quark pairs are used
(l+jets, the dilepton and the fully hadronic decay...
Dr.
Frank Ellinghaus
(Mainz University)
04/07/2014, 12:05
Various measurements provided by the ATLAS collaboration have significant impact on
parton density functions. Inclusive production of W and Z bosons have been analysed using an NNLO QCD fit and found to constraint the strange-quark density at medium and low Bjorken-x. The inclusive jet production at different centre-of-mass energies, dijet and trijet production measured by ATLAS are used in...
Dr.
ARUN KUMAR SOMA
(ACADEMIA SINICA)
04/07/2014, 12:06
Germanium detectors with sub-keV sensitivities can probe low-mass WIMP Dark Matter. This experimental approach is pursued at the Kuo-Sheng Neutrino Laboratory (KSNL) in Taiwan and at the China Jinping Underground Laboratory (CJPL) in China via the TEXONO and CDEX programs, respectively. The highlights of R&D efforts on point-contact germanium detectors and in particular the differentiation of...
Dr.
Andry Rakotozafindrabe
(CEA Saclay, IRFU, France)
04/07/2014, 12:10
The last pPb run at 5 TeV which took place at CERN LHC provides measurements of the Nuclear Matter (NM) effects at an unprecedented energy, especially for the heavy quark and quarkonium sectors. The comparison of the experimental results to the phenomenological inputs is therefore essential, both to put stringent constrains of their main features and to envision the next most discriminating...
Juan Herrero
(Universidad de Valencia-IFIC, CSIC)
04/07/2014, 12:10
We update previous analyses of the Zee-Babu model in the light of new neutrino and LFV data, and the LHC results. We also analyse the possibility of accommodating the deviations in Higgs the diphoton channel hinted by the LHC experiments, and the stability of the scalar
potential. We find that neutrino oscillation data and low energy constraints are still compatible with masses of the extra...
Mr.
Stefano Perazzini
(INFN e Università di Bologna)
04/07/2014, 12:15
Charmless b-hadron decays are suppressed in the Standard Model by tiny CKM matrix elements which brings the tree amplitudes to levels comparable with loop amplitudes, and potentially New Physics amplitudes. CP violation measurements using Dalitz plot analyses in multi-body decays allow to disentangle these various contributions. We report about the most recent measurements from LHCb, including...
Dr.
Sven Heinemeyer
(IFCA (CSIC))
04/07/2014, 12:15
We report on the currently highest precision calculation of the lightest Higgs boson mass, Mh, in the MSSM. We combine the Feynman-diagrammatic method (which gives the highest precision for low and medium mass SUSY mass scales) with an RGE resummation (which gives large contributions at high SUSY mass scales). The results are publicly available in the code FeynHiggs. We discuss the...
Dr.
Ning Zhou
(University of California, Irvine)
04/07/2014, 12:15
Different approaches to finding evidence for dark matter at the
LHC are presented. These include searches for events with large missing
transverse momentum and a single jet, photon or W/Z boson.
Different interpretations of the results are presented, including effective
field theories and explicit mediator models.
Results from sqrt(s) = 8 TeV data taking are presented.
Dr.
Sovan Chakraborty
(Max plank for Physics)
04/07/2014, 12:15
Supernovae (SN) are one of the highest energetic astrophysical events. Almost all the enormous energy (10^(53) ergs) released during such an event is emitted in terms of neutrinos. These neutrinos while free streaming out of the SN will undergo flavor oscillations. Apart from the usual MSW oscillations the SN neutrinos will have nonlinear flavor evolution due to neutrino-neutrino interactions....
Dr.
Rainer Wallny
(ETH Zürich, Switzerland)
04/07/2014, 12:20
Result of abstract merging:
Measurements of the top quark mass are presented using data collected by the CMS experiment in proton-proton collisions at the LHC at centre-of-mass energies of 7 and 8 TeV. Analyses in several decay channels of top quark pair events are employed to determine the top quark mass. The results are combined and compared to the world average.
Measurements of the top...
Dr.
Sergey Alekhin
(Instite for High Energy Physics (Protvino, Russia))
04/07/2014, 12:20
We consider impact of the recent data obtained by the LHC, Tevatron, and fixed-target experiments on the quark distributions in nucleon with a particular focus on disentangling different quark species. Improved determination of the poorly known strange sea distribution and the sea isospin asymmetry is obtained. The standard candle benchmarks for the Drell-Yan process at the LHC energies are updated.
Dr.
Kazuyoshi Kobayashi
(ICRR, University of Tokyo)
04/07/2014, 12:24
XMASS program is a multi-purpose low-background experiment with large
volume of liquid Xe scintillator at Kamioka in Japan.
In the current stage, we focus on the the direct detection of dark matter in
the form of WIMPs (Weakly Interacting Massive Particles) with 835 kg liquid Xe.
Though we started commissining on 2010, we found unexpected background on PMT
sealing material. To overcome...
Dr.
Alexander Himmel
(Duke University)
04/07/2014, 12:30
This talk will briefly survey the capabilities of current detectors sensitive to supernova neutrino bursts. It will then cover recent progess in development of supernova neutrino detection techniques as well as prospects for specific future experiments.
Alejandro Celis
(IFIC-Universitat de Valencia)
04/07/2014, 12:30
Within an effective field theory framework, I will discuss the possibility to discriminate between different operators that contribute to lepton flavour violating tau decays. Correlations among decay rates in different channels as well as differential distributions in many-body decays are considered. Recent developments in the determination of the hadronic form factors for tau -> mu pi...
Zaida Conesa del Valle
(IPN Orsay (CNRS/IN2P3 - Université Paris-Sud))
04/07/2014, 12:30
The experimental laboratory to create and study strongly interacting matter under extreme conditions of temperature and energy density are ultra-relativistic heavy-ion collisions. A transition of hadronic matter to a Quark Gluon Plasma (QGP) phase is predicted by lattice Quantum ChromoDynamics for high enough temperatures. Heavy quarks (charm and beauty) and quarkonia are produced in the early...
Mr.
Rafael Silva Coutinho
(University of Warwick)
04/07/2014, 12:30
The three-body charmless hadronic decay B0s -> K0SKpi provides a number of novel possibilities to search for CP violation effects and test the Standard Model of particle physics. These include model-dependent and model-independent comparisons of the Dalitz plot distributions of the decay-time-integrated K0SK+pi- and K0SK-pi+ final states, decay-time-dependent (but without initial state flavour...
Dr.
Francesco Santanastasio
(Sapienza, University of Rome)
04/07/2014, 12:30
The search for heavy resonances involving bosons in ATLAS and CMS are presented. These final states include diphoton, VV, VH, and HH resonances.
Katarzyna Wichmann
(DESY)
04/07/2014, 12:35
New combined H1 and ZEUS data on neutral and charged current inclusive
cross sections at HERA from all running periods 1994-2007, are used as
the sole input to NLO and NNLO QCD analyses to determine new sets of
parton distributions, HERAPDF2.0, with small experimental uncertainties
and an estimate of model and parametrisation uncertainties. Charm and
jet production data are also...
Ms.
Sayaka Kawabata
(Tohoku University)
04/07/2014, 12:40
We propose a new method to measure the top quark mass at the LHC. This method requires only lepton energy distribution and is basically independent of the production process of the top quarks. With this method, the MSbar mass of the top quark can be determined. We perform a simulation analysis of the top quark mass reconstruction with ttbar pair production and lepton+jets decay channel at the...
Dr.
Marcin Kuzniak
(Queen's University)
04/07/2014, 12:42
The DEAP-3600 experiment is located 2 km underground at SNOLAB, in Sudbury, Ontario. It is a single-phase detector, which searches for dark matter particle interactions with 1 tonne fiducial mass of liquid argon target.
A first generation prototype detector (DEAP-1) with a 7-kg liquid argon target mass demonstrated a high level of pulse-shape discrimination (PSD) for reducing beta/gamma...
Dr.
Daniele Trocino
(Northeastern University (US))
04/07/2014, 12:45
A search for Higgs boson invisible decay modes has been carried out in events where the Higgs boson is produced in association with a Z boson as well as through Vector Boson Fusion. In the associated production search, electron, muon and b-quark pair decay modes of the Z-boson are considered. The analyses are based on pp collision data collected with the CMS detector at the LHC collider at...
Veronika Chobanova
(MPI)
04/07/2014, 12:45
We present the results of the time-dependent measurements of CP-violating parameters in $B^0$ decays to the final states $\omega K_S^0$ and $\eta' K^0$. The results are obtained using the full statistics collected by the Belle experiment on $e^+ e^-$ asymmetric-energy collider KEKB, which corresponds to 772 million $B\bar{B}$ events.
Prof.
Giles Barr
(Oxford University)
04/07/2014, 12:45
The Long-Baseline Neutrino Experiment plans a 34-kton (fiducial mass) liquid argon time projection chamber to be sited at 4850 ft depth at the Sanford Underground Research Facility in South Dakota. The significant overburden at this site gives LBNE significant physics reach for several non-beam physics topics. These include neutrino oscillation studies with atmospheric neutrinos, for which...
Dr.
Lamia Benhabib
(CERN, Switzerland)
04/07/2014, 12:50
Quarkonia are especially relevant for studying the quark-gluon plasma since they are produced at early times of the collision and propagate through the medium, mapping its evolution. This talk presents measurements of quarkonia in pp and PbPb collisions at 2.76 TeV and in pPb collisions at 5.02 TeV.
Filipe Joaquim
(CFTP, IST)
04/07/2014, 12:50
A general overview of the connection between radiative LFV decays, neutrino and LHC data in the context of SUSY seesaws will be given. The impact of the measurement of the reactor neutrino mixing angle and the most recent bounds on rare LFV decays will be discussed.
Koji Terashi
(University of Tokyo)
04/07/2014, 12:50
Resonances decaying into a pair of particles are an obvious
place to look for phenomena beyond the Standard Model. This talk
summarizes recent results on searches for resonances in pairs of jets, leptons,
lepton and jet, photon and jet, as well as pairs of photons.
Various models are considered such the Z' and W', the Randall-Sundrum warped
extra dimensions as excited quarks, quantum...
Dr.
Patrick Motylinski
(UCL)
04/07/2014, 12:50
Abstract: In this talk I will present results on continuing updates in PDFs
within the MSTW framework due to both theory improvements and the inclusion of
new data sets, including most of the up-to-date LHC data. A new set of PDFs is
close to being finalised, with no significant changes expected to the PDFs
presented here.
Dr.
Maria Aldaya Martin
(University of Hamburg, Germany)
04/07/2014, 12:55
Combinations of several measurements of top quark physics from ATLAS and CMS are presented and compared with the expectations from theory. This includes measurements of top quark pair and single top production cross sections as well as properties. The world average combination of the top quark mass will also be presented. The treatment of experimental and modelling systematic uncertainties in...
Prof.
Paolo Gondolo
(University of Utah)
04/07/2014, 13:00
Direct dark matter searches look for the scattering of dark matter particles from the galactic halo off nuclei in laboratory detectors. A host of apparently contradictory experimental results have been accumulated over the past few years: unexplained events in excess of the expected background, annual modulations with the predicted characteristics of a dark matter signal, upper limits...
Dr.
Stefano Rosati
(INFN Sezione di Roma)
04/07/2014, 13:00
Searches for decays of the Higgs boson into non detectable invisible particles are presented. Data
taken by the ATLAS detector at center of mass energies of 7 and 8 TeV are analysed and in the
absence of evidence of such decays, upper limits on the branching ratio to invisible decays
are set.
Dr.
Nicolas Arnaud
(LAL (CNRS/IN2P3 and Université Paris Sud))
04/07/2014, 13:00
We report a Dalitz plot analysis of the charmless hadronic decays of charged B mesons to the final state Ks pi+ pi0 using the full BABAR dataset of 471 million BBbar events collected at the Upsilon(4S) resonance. We observe an excess of signal events and measure the branching fractions and CP asymmetries, for the different resonant decay modes and inclusively.
Dr.
Juan Rojo
(University of Oxford)
04/07/2014, 13:05
PDFs have been an essential ingredient for Run I
phenomenology, and will be so even more at the upcoming Run II. Many
crucial LHC analysis benefit from improved PDFs, from precision Standard
Model measurements, like the W mass determination, and Higgs boson
characterization to BSM searches. NNPDF3.0 is the new forthcoming PDF
release from the NNPDF Collaboration, a major upgrade that...
Dr.
Maria Zurita
(University of Santiago de Compostela)
04/07/2014, 13:10
We discuss the Hessian PDF reweighting - a technique intended to estimate the effects that new measurements have on a set of PDFs. The method stems straightforwardly from considering new data in a usual χ2 fit and it naturally incorporates also non-zero values for the tolerance, Δχ2>1. In comparison to the contemporary Bayesian reweighting techniques, there is no need to generate large...
Uta Klein
(University of Liverpool)
04/07/2014, 13:10
Result of merged abstracts:
Charged and neutral current Drell Yan cross sections are sensitive to the parton distribution functions of the proton and electroweak corrections. The measurements of the neutral current DY process in three distinct kinematic regions, i.e. at the Z boson mass peak, below and above, are performed by the ATLAS collaboration using 7 TeV proton-proton collision data....
Dr.
Gianluca Lamanna
(INFN Pisa)
04/07/2014, 13:10
Recent results and prospects for precision tests of the Standard Model in kaon decay in flight experiments at CERN are presented. A measurement of the ratio of leptonic decay rates of the charged kaon at a 0.4% precision constrains the parameter space of new physics models with extended Higgs sector, a fourth generation of quarks and leptons or sterile neutrinos.
Searches for heavy neutrino...
Dr.
Francesco Romeo
(IHEP of Beijing)
04/07/2014, 13:10
The most recent results on searches for 1st, 2nd, and 3rd generation leptoquarks with the ATLAS and CMS experiment are presented. Alternative interpretations of the searches for R-parity-violating stop squark decays are also presented.
Dr.
Michal Malinsky
(Charles University in Prague)
04/07/2014, 13:13
I will review the current status of the minimal SO(10) GUT and comment on the new results of a dedicated two-loop analysis and their phenomenological implications, focusing, in particular, on the complementarity of the constraints from the LHC physics and those from the future proton decay searches.
Prof.
Hai-Yang Cheng
(Academia Sinica)
04/07/2014, 13:15
Branching fractions and CP-violating asymmetries of charmless three-body decays of B_{u,d} and B_s mesons are studied using a simple model based on the factorization approach. We consider both resonant and nonresonant contributions. Dominant nonresonant contributions to tree-dominated three-body decays can be evaluated using heavy meson chiral perturbation theory valid in the soft meson limit....
Mitsuru Kakizaki
(University of Toyama)
04/07/2014, 13:15
The supersymmetric SU(5) grand unified theory whose gauge symmetry is
broken by virtue of the Hosotani mechanism naturally realizes the huge
mass splitting between the colored Higgs triplet and the electroweak
Higgs doublet superfields, and predicts the existence of adjoint
chiral multiplets with masses of the order of the supersymmetry
breaking scale as a byproduct. The low-energy Higgs...
Dr.
Luigi Guiducci
(Università and INFN Bologna)
04/07/2014, 15:00
The CMS muon system has played a key role for many physics results obtained from the LHC Run 1 data. The LHC will increase the beam energy as well as progressively increase the peak instantaneous luminosity in Run 2 and in the following years. Significant consolidation and upgrade activities are ongoing, in order to improve the CMS muon detectors and trigger performance and robustness. With...
Mr.
Josef NOVY
(Czech Technical University in Prage (Czech Rep.))
04/07/2014, 15:00
This paper presents development and recent status of the new data acquisiton system of the COMPASS experiment at CERN with up to 50 kHz trigger rate and 36 kB average event size during 10 second period with beam followed by approximately 40 second period without beam. In the original DAQ, the event building is performed by software deployed on switched computer network, moreover the data...
Dr.
Luca Stanco
(INFN - Padova)
04/07/2014, 15:00
A search for events ep-> ep Z0 has been performed in ep collisions at HERA using the ZEUS detector. The search is based on the entire HERA-I and HERA-II data set, amounting to 0.49 fb-1 of integrated luminosity. The Z0 was searched in the di-jet decay mode with elastic condition defined by etamax < 3, where etamax is defined as the pseudorapidity of the energy deposit in the calorimeter...
Mr.
Mark Smith
(University of Manchester)
04/07/2014, 15:00
LHCb has collected the world's largest sample of charmed hadrons. This sample is used to search for direct and indirect CP violation in charm, and to measure D0 mixing parameters. New updated measurements from several decay modes are presented, with complementary time-dependent and time-integrated analyses. We report on recent measurements of CP asymmetries in D→KK and D→ππ decays using the...
Dr.
Nuria Carrasco Vela
(INFN-Rome3)
04/07/2014, 15:00
Accurate measurements of K, D and B meson mixing amplitudes provide stringent constraints in the Unitary Triangle analysis, as well as useful bounds on New Physics scales. Lattice QCD provides a non perturbative tool to compute the hadronic matrix elements entering in the effective weak Hamiltonian, with errors at a few percent level and systematic uncertainties under control. In this talk, I...
Dr.
David Bravo
(Virginia Tech (United States))
04/07/2014, 15:00
The Borexino detector has convincingly shown its outstanding performances in the in the low energy, sub-MeV regime through its unprecedented accomplishments in the solar and geo neutrinos detection. These performances make it the ideal tool to accomplish a state-of-the-art experiment able to test unambiguously the long-standing issue of the existence of a sterile neutrino, as suggested by the...
Dr.
Kenneth Herner
(Fermilab)
04/07/2014, 15:00
We present the combination of searches for the Standard Model Higgs boson at a center-of-mass energy of sqrt(s)=1.96 TeV, using the full Run 2 dataset collected with the D0 detector at the Fermilab Tevatron collider. The major contributing processes include associated production (WH->lvbb, ZH->vvbb, ZH->llbb, and WH->WWW(*)) and gluon fusion (gg->H-->WW(*)). We also present tests of different...
Dr.
Tim Linden
(University of Chicago)
04/07/2014, 15:00
In scenarios where dark matter particles can annihilate to produce standard model, the galactic center of the Milky Way is expected to provide the highest flux from dark matter in the sky. Recently, we have worked on gamma-ray observations from the Fermi-LAT telescope, and have detected a significant extended excess, which is spherically symmetric around the position of the galactic center,...
Dr.
Shengsen Sun
(Institute of High Energy Physics)
04/07/2014, 15:15
We measured the asymmetry A_CP of branching ratios of D0—> K-pi+ in the CP-odd and CP-even eigenstates to be (12.7+/1/3+/-0.7)% based on 2.92fb-1 of data accumulated at psi(3770) at BESIII/BEPCII. The A_CP can be used to extract the strong phase difference delta_Kpi between the double Cabbibo-suppressed process D0b —> K-pi+ and the Cabbibo-favored process D0—>K-pi+. Using the world-average...
Mr.
Dag Gillberg
(CERN)
04/07/2014, 15:15
The combined measurements of the properties of the Higgs boson using the ATLAS detector
and up to 25 fb-1 of 7 TeV and 8 TeV pp collision data collected in 2011 and 2012, are discussed.
Prof.
Mandy Cooper-Sarkar
(Oxford University)
04/07/2014, 15:15
We present the HERAFitter project which provides a framework for Quantum
Chromodynamics (QCD) analyses related to the proton structure in the
context of multi-processes and multi-experiments.
Based on the concept of factorisable nature of the cross sections into
universal parton distribution functions (PDFs) and process dependent
partonic scattering cross sections, HERAFitter allows...
Dr.
Yusheng Wu
(University of Michigan; Institute Of Physics, Academia Sinica)
04/07/2014, 15:15
A measurement of the cross section for 4 lepton production near the Z resonance
is presented for sqrt(s) = 7 and 8 TeV proton-proton collisions recorded with the ATLAS experiment. The measurement is interpreted as a determination of the branching fraction for the Z boson decaying into 4 leptons and is found consistent with the expectation from the Standard Model. This result provides an...
Alessandro Menegolli
(Universita di Pavia)
04/07/2014, 15:15
ICARUS is the largest liquid Argon TPC detector ever built (~600 ton LAr mass). It was smoothly operated underground at the LNGS laboratory in Gran Sasso since summer 2010, up to june 2013,
collecting data with the CNGS beam and with cosmics. Liquid argon TPCs are really ``electronic bubble chambers'' providing a completely uniform imaging and calorimetry with unprecedented accuracy on...
Dr.
Jose Guillermo Panduro Vazquez
(Royal Holloway, University of London)
04/07/2014, 15:15
The experience gained during the first period of very successful data
taking of the ATLAS experiment (Run I) has inspired a number of ideas
for improvement of the Data AcQuisition (DAQ) system that are being
put in place during the so-called Long Shutdown 1 of the Large Hadron
Collider (LHC), in 2013/14. We have updated the data-flow
architecture, rewritten an important fraction of the...
Mr.
Marco CIRELLI
(IPhT CNRS/CEA Saclay)
04/07/2014, 15:20
I present a phenomenological, data-centered and data-driven assessment of the status of indirect searches for particle Dark Matter, and of the main implications for DM model building. Tantalizing hints and stringent constraints seem to continuosly chase each other, as a number of well performing experiments keep delivering their data. This year may be the one in which we finally see the...
Dr.
Cesare Calabria
(Univ. di Bari e Sez. dell'INFN, Italy)
04/07/2014, 15:20
The CMS collaboration considers upgrading the muon forward region which is particularly affected by the high-luminosity conditions at the LHC. The proposal involves Gas Electron Multiplier (GEM) chambers, which are able to handle the extreme particle rates expected in this region along with a high spatial resolution. This allows to combine tracking and triggering capabilities, which will...
Mr.
Nisar Nellikunnummel
(Tata Institute of Fundamental Research)
04/07/2014, 15:30
We search for CP violation in $D^0$ and $\bar{D}^0$ decays to the $\pi^0 \pi^0$ final state and measure $D^0$-$\bar{D}^0$ mixing in the decays of $D^0 \to K^+ \pi^-$ and $K_S ^0 \pi^+ \pi^-$. The asymmetry obtained in the rate of $D^0$ and $\bar{D}^0$ decays to the $\pi^0 \pi^0$ final state, $[-0.03 \pm 0.64(stat) \pm 0.10(syst)]\%$, is consistent with no CP violation. The mixing parameters...
Dr.
Misha Lisovyi
(DESY Hamburg)
04/07/2014, 15:30
The copious production of charm quarks at HERA has yielded a detailed
understanding of QCD dynamics, the only measure of the charm contribution
to the proton structure, as well as a measurement of the charm mass.
Although with smaller samples, measurements of beauty production also
place constraints on the structure of the proton and allow a measurement
of the beauty quark mass. ...
Dr.
federico de guio
(CERN)
04/07/2014, 15:30
We review the online and offline workflows designed to align and calibrate the CMS detector. Starting from the gained experience during the first LHC run, we discuss the expected developments for Run II. In particular, we describe the envisioned different stages, from the alignment using cosmic rays data to the detector alignment and calibration using the first proton-proton collisions data (...
Dr.
Petros Dimopoulos
(Centro Fermi - Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi" - Dipartimento di Fisica, Univ. di Roma "Tor Vergata")
04/07/2014, 15:30
We present precision lattice calculations for the decay constants of the D and B sector as well as determinations of the charm and b quark mass values. Heavy flavour lattice computations are indispensable
for SM accuracy tests and may serve as discovery tools for new physics. We use Nf=2+1+1 dynamical quark gauge configurations generated by European Twisted Mass Collaboration. We use data at...
Dr.
Wesley Ketchum
(Los Alamos National Laboratory)
04/07/2014, 15:30
The existing Booster Neutrino Beam (BNB) and the exceptional reconstruction capabilities of the liquid argon TPC detector technology provide an opportunity to execute a world-leading short-baseline neutrino physics program at Fermilab. The MicroBooNE detector, located 470m from the beamline target, is set to begin operation in 2014. The Liquid Argon Near Detector, LAr1-ND, is a proposed new...
Dr.
Ping Tan
(The Univ. of Iowa, United States)
04/07/2014, 15:30
Result of merged abstracts:
The production of W and Z bosons has been observed in pp collisions at a center-of-mass energy of 7 and 8 TeV using data collected in the CMS experiment. W events were selected containing an isolated, energetic electron or muon. Z events were selected containing a pair of isolated, energetic electrons or muons. We present studies of single and double differential...
Dr.
Mingshui Chen
(IHEP, CAS)
04/07/2014, 15:35
The combination of the coupling results of all Higgs boson decay channels measured at CMS is presented. The analysis is based on pp collision data collected at centre-of-mass energies of 7 and 8 TeV corresponding to integrated luminosities of 5/fb and 20/fb respectively. Various fits looking for deviations of the couplings from the Standard Model predictions are carried out and the results are...
Dr.
Bernd Stelzer
(SFU Simon Fraser University (CA)
04/07/2014, 15:35
The instantaneous luminosity of the Large Hadron Collider at CERN will be increased up to a factor of five with respect to the design value by undergoing an extensive upgrade program over the coming decade.
Several sub-systems of the ATLAS detector will also be upgraded in order to cope with the higher particle rate and to further improve the excellent performance provided during the first...
Dr.
sue cheatham
(Technion)
04/07/2014, 15:45
During the 2011 data-taking run, the Large Hadron Collider (LHC) collided proton beams at the energy of 7 TeV in the centre-of mass, as well as heavy ions at the centre of mass energy of 2.76 TeV. The ATLAS Trigger is designed to reduce the rate of events from the nominal maximum bunch-crossing rate of 20 MHz to approximately 400 Hz, which will then be written on disk offline. The online...
Dr.
Michel Sauter
(ETH Zurich)
04/07/2014, 15:45
Recent measurements of final states including charm hadrons observed
at the HERA collider are presented. The H1 and ZEUS collaborations
combined their D* differential cross section measurements and reach
precisions as good as 5-10%, whereas the theory uncertainties are much
larger. Using the ZEUS experiment, D* production was measured at
different centre-of-mass energies. The production...
Dr.
Denis Derkach
(University of Oxford)
04/07/2014, 15:45
Charmed hadrons are a unique probe of CP violation with up-type quarks. Yet, CP violation in the charm sector is very suppressed by tiny CKM phases in the Standard Model. Any non-zero measurement would thus be a sign of New Physics. We report on recent measurements of CP asymmetries in multibody charmed meson and baryon decays. The CP asymmetries are studied in regions of the Dalitz space.
Dr.
Luca Stanco
(INFN - Padova)
04/07/2014, 15:45
Neutrino physics is nowadays receiving more and more attention as a possible source of infor- mation for the long–standing problem of new physics beyond the Standard Model. The recent measurement of the third mixing angle θ13 in the standard mixing oscillation scenario encourages us to pursue the still missing results on leptonic CP violation and absolute neutrino masses. However, several...
Blazenka Melic
(Rudjer Boškovic Institute, Theoretical Physics Division P.O.Box 180, HR-10002 Zagreb, Croatia)
04/07/2014, 15:50
We compute the decay constants of the lowest ccbar-states with quantum numbers J(PC)=0(-+) [eta_c], 1(--) [J/psi], and 1(+-) [hc] by using lattice QCD and QCD sum rules. We consider the coupling of J/psi to both the vector and tensor currents. Lattice QCD results are obtained from the unquenched (Nf=2) simulations using twisted mass QCD at four lattice spacings, allowing us to take the...
688.
Constraints on dark matter and future observational strategies with gamma-ray space experiments
Dr.
Aldo Morselli
(INFN Roma Tor Vergata)
04/07/2014, 15:50
Detection of gamma rays and cosmic rays from the annihilation or decay of dark matter particles is a promising method for identifying dark matter, understanding its intrinsic properties, and mapping its distribution in the universe. I will review recent results from the Fermi Gamma-ray Space Telescope and other space-based experiments, and highlight the constraints these currently place on...
Mr.
Saranya Ghosh
(Tata Institute of Fundamental Research (TIFR), Mumbai)
04/07/2014, 15:50
Measurements of the muon charge asymmetry in inclusive pp to WX production at sqrt(s)=7 TeV are presented. The data sample corresponds to an integrated luminosity of 4.7 inverse femtobarns recorded with the CMS detector at the LHC. With a sample of more than twenty million W to mu nu events, the statistical precision is greatly improved in comparison to previous measurements. These new results...
Dr.
Piotr Gasik
(TU München)
04/07/2014, 15:50
ALICE at the CERN LHC is planning a major upgrade of the central barrel detectors to cope with an increase of the LHC luminosity in Pb-Pb after 2018. The goal is to record Pb-Pb interactions at a rate of 50 kHz after Long Shutdown 2 (LS2), which is a factor of about 100 more than the current data acquisition rate. For the Time Projection Chamber (TPC) this implies replacement of the existing...
Dr.
Kirill Prokofiev
(Laboratori Nazionali di Frascati INFN)
04/07/2014, 15:55
This contribution will review individual and combined measurements of the spin and parity properties in the
diphoton, ZZ (with subsequent decays to four leptons) and WW (with subsequent decays to lvlv) channels of the
Higgs boson in individual channels using the ATLAS detector and up to 25 fb-1 of 7 TeV and 8 TeV pp collision
data collected in 2011 and 2012.
Dr.
Nancy Marinelli
(University of Notre Dame, US)
04/07/2014, 16:00
The LHC Run II will confront us with new challenges, mainly due to the higher number of interactions per bunch crossing (pileup) and the reduced time distance between bunches. Moreover, the higher energy shifts the interest to complex physics objects such as boosted topologies for jet studies.
In order to be ready for the beginning of the run, in view of an early discovery, the CMS...
Dr.
Yangheng Zheng
(University of Chinese Academy of Sciences)
04/07/2014, 16:00
Based on 2.92/fb of data accumulated at psi(3770), BESIII measured the branching ratio of (D+ —> mu+ nu) is about (3.71+/-0.19+/-0.06)x 10^{-4}, and determine the weak decay constant f_D=(203.2+/-5.3+/-1.8)MeV. these are the most precise results.
Based on the psi(3770) -> DDbar data accumulated at the BESIII experiment, we present studies of D0 -> K- e+ nu and D0 -> pi0 e+ nu decays which...
Dr.
Jean-Baptiste Lagrange
(Imperial College, London)
04/07/2014, 16:00
Neutrino beams produced from the decay of muons in a racetrack-like decay ring (the so called Neutrino Factory) provide a powerful way to
study neutrino oscillation physics and in addition provide unique beams for neutrino interaction studies. The Neutrinos from STORed Muons (nuSTORM) facility is a neutrino factory-like facility designed for short baseline neutrino oscillation and neutrino...
Mr.
Maxim Nefedov
(Samara State University)
04/07/2014, 16:00
We study the photoproduction of isolated prompt photons associated with jets in the framework
of the parton Reggeization approach. The data on pseudorapidity and transverse momentum
distributions of the photon and jet, obtained by H1 and ZEUS Collaborations at DESY HERA,
are described with the good accuracy, as well, as the data on azimuthal decorrelation variables.
The main improvements...
Dr.
Lars Hofer
(IFAE Barcelona)
04/07/2014, 16:05
We present results for the electroweak corrections to the hadronic production of a charged lepton pair in association with two jets and give detailed predictions for the LHC operating at 13 TeV. While corrections to the total cross section are small, we find significant non-uniform distortions in high-energy tails due to electroweak Sudakov logarithms.
Dr.
Francisco Salesa Greus
(Pennsylvania State University)
04/07/2014, 16:10
The High Altitude Water Cherenkov (HAWC) Observatory is a TeV gamma-ray detector located at an altitude of 4100 meters on the northern slope of the Sierra Negra volcano in the state of Puebla, Mexico. The detector will consist of 300 water Cherenkov detectors spread on a 22000 square meter area, and is expected to be fully operational by fall this year. Thanks to its large field-of-view, good...
Prof.
Biagio Lucini
(University of Swansea)
04/07/2014, 16:10
It has been known for a long time that large-N methods can
give invaluable results into non-perturbative phenomena such as
confinement. Lattice techniques can be used to compute quantities at
large N. In this talk, I will review some recent large-N lattice
results and discuss their implications for our understanding of
non-perturbative QCD.
Dr.
Emanuele Di Marco
(CERN)
04/07/2014, 16:10
Studies of the Higgs boson spin and parity are presented using data samples corresponding to the gamma gamma, ZZ, and WW decay channels. The analyses are based on pp collision data collected at centre-of-mass energies of 7 and 8 TeV, corresponding to integrated luminosities of approximately 5/fb and 20/fb, respectively. The data are compared to the expectations for a Standard Model Higgs...
Dr.
Astrid Muennich
(DESY)
04/07/2014, 16:10
In the last decade, R&D of detectors for the future International Linear Collider (ILC) has been performed by the community. The International Large Detector (ILD) is one detector concept at the ILC where calorimetry and tracking systems are combined. The tracking system consists of a Si vertex detector, forward tracking disks and a large volume Time Projection Chamber (TPC).
Within the...
Dr.
Karel Cerny
(Czech Tecnical University Prague)
04/07/2014, 16:15
Results from diffractive deep-inelastic scattering with a leading
proton detected in forward spectrometers are presented. Data from the
two experiments H1 and ZEUS, using the FPS and LPS
spectrometers, respectively, are combined in a common phase
space. New four-differential measurements using the VFPS installed at
the H1 experiment are also presented. A QCD factorisation theorem...
Dr.
Arantza Oyanguren
(IFIC- Valencia)
04/07/2014, 16:15
Precision measurements of the D -> pi e+ nu form factor could shed new light on the persistent difference between inclusive and exclusive measurements of Vub. We report the measurement of the partial branching fraction of D -> pi e+ nu in bins of the four-momentum transfer squared of the D to pi system using 347.2 /fb of integrated luminosity of the BaBar data. The D -> pi form factor is...
Prof.
Michael Shaevitz
(Columbia University)
04/07/2014, 16:15
The IsoDAR experiment uses a novel isotope decay-at-rest (DAR) source of electron antineutrinos using protons from a 60 MeV cyclotron. Paired with a large neutrino detector (such as KamLAND or WATCHMAN), the experiment can observe hundreds of thousands of inverse beta-decay events and do a decisive test of the current hints for sterile neutrino. Daedalus is a phased program leading to a...
Prof.
Antonella De Santo
(University of Sussex), Dr.
Emily Nurse
(University College London)
04/07/2014, 16:20
Measurement of production of vector bosons associated with two forward jets
is reported based on 20 fb-1 of data at sqrt(s) = 8 TeV recorded by the ATLAS
experiment. The measurement is performed in various fiducial volumes, sensitive
to QCD and Electroweak production mechanisms. The electroweak component for single Z boson production is extracted by a fit to the dijet invariant mass...
Swagato Banerjee
(University of Wisconsin-Madison)
04/07/2014, 16:25
The discovery of the Higgs boson opens many perspectives to explore physics beyond the Standard Model.
This talk describes constraints of new physics in a number of models using the combined measurements
of the coupling strength of the 125 GeV Higgs particle using the entire ATLAS run-I data. The various
models presented include an additional real electroweak singlet, two Higgs doublet...
Mr.
Jonathan Bortfeldt
(LMU Munich)
04/07/2014, 16:25
We report on the development of novel discharge insensitive floating strip Micromegas (MICRO-MEsh GASeous) detectors, fit for use in high-energy muon spectrometers. The suitability of these detectors for particle tracking is shown in high-background environments and at very high particle fluxes up to 60MHz/cm^2.
Measurement and simulation of the microscopic discharge behavior demonstrate the...
Dr.
Davide Meloni
(Dipartimento Matematica e Fisica, Universita' di RomaTre)
04/07/2014, 16:30
We consider the disappearance data of the Daya Bay experiment to constrain the parameter space of models where sterile neutrinos can propagate in a large compactified extra dimension (LED) and models where non-standard interactions affect the neutrino production and detection (NSI). I will show that compactification radius R in LED scenarios can be constrained at the level of 0.57μm for normal...
Dr.
Giovanni Franzoni
(CERN)
04/07/2014, 16:30
Recorded data at the CMS experiment are funnelled into streams, integrated in the HLT menu, and further organised in a hierarchical structure of primary datasets, secondary datasets, and dedicated skims. Datasets are defined according to the final-state particles reconstructed by the high level trigger, the data format and the use case (physics analysis, alignment and calibration, performance...
Matteo Rama
(Istituto Nazionale di Fisica Nucleare - Frascati)
04/07/2014, 16:30
The datasets that the LHCb and Belle II experiments are expected to collect in the coming years will allow a sub-degree precision measurement of the angle gamma of the CKM unitarity triangle using Bch->D(*)0K(*) decays. To reach this goal a number of effects that have been neglected so far will require careful evaluation. We discuss these corrections with particular emphasis on the impact of...
Dr.
Ewald Paul
(physikalisches Insitut bonn)
04/07/2014, 16:30
The exclusive reaction gamma p -> psi(2S) p has been studied in both
deep inelastic electroproduction and in photoproduction with the ZEUS
detector in ep collisions at HERA using an integrated luminosity of
350 pb-1. The psi(2S) mesons were identified via their decay chain:
psi(2S) -> J/psi pi+ pi- with J/psi -> mu+ mu-. The ratio of the
production cross sections R =...
Dr.
Mateusz Koren
(Instituto de Física Teórica UAM/CSIC)
04/07/2014, 16:30
We analyze 2+1 dimensional Yang-Mills theory regularized on a lattice. We employ twisted boundary conditions in the spatial directions and show, using both perturbation theory and non-perturbative simulations, that the physical quantities depend only on the combination NL/b and the magnetic flux given by the twist (N is the number of colors, L the length of the spatial torus and b is the...
Dr.
Paolo Azzurri
(Univ. di Pisa e Sez. dell'INFN (Italy))
04/07/2014, 16:35
The measurement of the electroweak production cross section of a Z-boson with two jets in proton-proton collisions by the CMS experiment is presented. The cross section is measured in dielectron and dimuon final states and the measurement, combining different methods and channels is in agreement with the theory prediction.The hadronic activity in events with Z-boson production in association...
Dr.
WENBIN QIAN
(LAPP-CNRS)
04/07/2014, 16:45
Decays of b-hadrons to states including open charm provide a rich laboratory to constrain the unitarity matrix and search for new physics. We present recent measurements in this sector, including observations of new decay modes, CP violation and effective lifetime measurements.
Dr.
Peter Bussey
(Glasgow University)
04/07/2014, 16:45
The photoproduction of isolated photons, both inclusive and together
with a jet, has been measured with the ZEUS detector at HERA using an
integrated luminosity of 374 pb-1. A variety of kinematic variables
that are sensitive to different aspects of the event dynamics are studied.
Cross sections are given in terms of the collinearity of the photon and
the jet, the fraction of the...
Osamu Yasuda
(Tokyo Metropolitan University)
04/07/2014, 16:45
It is shown that it is possible to obtain the analytical expression for the
effective mixing angle in matter using the formalism which was developed by Kimura, Takamura and Yokomakura for the neutrino oscillation probability in
matter with constant density. If we assume that the imaginary part of the
integral of the difference of the energy eigenvalues of the two levels at...
Dr.
Maurizio Bonesini
(Sezione INFN Milano Bicocca)
04/07/2014, 16:45
Scintillator based time-of-flight detectors (TOF) may attain good timing performances (eg the MICE TOF detectors and the MEG timing counter with 50 ps time intrinsic resolution), but may have problems for operation inside external magnetic fields. Even fringe fields of a few hundred Gauss may be a problem and complicate magnetic shieldings need to be devised. This is due to the conventional...
Dr.
Jie Lu
(IFIC, University of Valencia)
04/07/2014, 16:50
We study the Effective Field Theory of three QCD-like theories: which can be classified by having quarks in a complex, real or pseudo-real representation of gauge group. We wrote their effective field theories in a very similar way so that the calculations can be done using techniques from chiral perturbation theory.
We calculated the vacuum-expectation-value, the mass and the decay constant...
Dr.
Stephen Farry
(University of Liverpool)
04/07/2014, 16:50
The LHCb forward acceptance covers a range of rapidities not accessible by the other LHC experiments, allowing for complementary measurements. We report recent measurements of electroweak boson production, either inclusive, or in association with a jet or a D meson.
Prof.
Reshmi Mukherjee
(Barnard College, Columbia University)
04/07/2014, 16:50
VERITAS is a ground-based gamma-ray observatory consisting of an array of four atmospheric Cherenkov telescopes located in southern Arizona, USA. VERITAS carries out an extensive observation program of the gamma-ray sky at energies above 0.1 TeV. Observations of Galactic and extragalactic sources in the TeV band are sensitive probes of the highly energetic processes occurring in these objects....
Dr.
Yoshiyuki Onuki
(University of Tokyo)
04/07/2014, 17:00
Dalitz plot analyses of $D \to K_S^0 h h$ ($D = D^0$ or $\bar{D}^0$, $h = K$ or $\pi$) decays following $B \to D^{(*)} K^{(*)}$ decay provide sensitive measurements of CP-violating angle $\phi_3$. We present the first measurement of the CP-violating angle $\phi_3$ using a model-dependent Dalitz plot analysis of $B \to D K$, $D \to K_S^0 K^{\pm} \pi^{\mp}$ decays, and unique model-independent...
Dr.
Afanasyev Leonid
(Joint Institute for Nuclear Research (JINR))
04/07/2014, 17:00
Results on study the hydrogen-like atoms consisting of charged pions and Kaons are presented. The first measurement of K+π− and K−π+ atoms lifetime was fulfilled basing on identification of 178±49 Kπ pairs from the atom breakup. The measured lifetime is τ=〖2.5〗_(-1.8)^(+3.0) fs . This value is dictated by properties of the strong πK-interaction at low energy, namely S-wave πK scattering...
Ms.
Marija Kekic
(University of Valencia)
04/07/2014, 17:00
We evaluate the contribution to effective number of relativistic degrees of freedom of extra sterile states at their decoupling temperatures in Type I seesaw models with two and three extra sterile states as a function of the seesaw and the light neutrino mass.
Prof.
Doris Yangsoo Kim
(Soongsil University)
04/07/2014, 17:00
The rich physics of heavy quark decays provides creative and precise ways to look into nature. Experimentally, B factories have been producing quite prominent discoveries and new insights: The CP violation in B meson decays, charm neutral meson oscillations, discovery of new particles such as X(3872), and various other significant physics results. Based on these successes, a next generation B...
Dr.
Brian Kirby
(University of Hawaii at Manoa)
04/07/2014, 17:05
The Imaging Time-of-Propagation (iTOP) Chrenkov ring-imaging detector is a particle identification system designed for use in the barrel region of the Belle II spectrometer. The system detects Cherenkov photons produced by charged particles passing through one of 16 quartz bars arranged in a barrel around the inner tracking detectors. An array of 32 pixelated micro-channel plate...
Dr.
Francisco Campanario
(IFIC, UV-CSIC)
04/07/2014, 17:10
In high energy hadronic collisions, a general CP-violating Higgs boson Φ with accompanying jets can be efficiently produced via gluon fusion, which is mediated by heavy quark loops.
We study the dominant sub-channel gg→Φggg of the gluon fusion production process with triple real emission corrections at order α5s.
We go beyond the heavy top limit approximation and include the full mass...
Mr.
Siqi Yang
(University of Science and Technology of China)
04/07/2014, 17:10
Result of merged abstracts:
We present charge asymmetry measurements from $W$ boson decays in both electron and muon channels, with 7.3 fb-1 to 9.7 fb-1 of Run II data collected by the D0 detector at the Fermilab Tevatron Collider. In the electron channel, we present the lepton asymmetry as a function of the electron transverse momentum and pseudo-rapidity out to |eta| \leq 3.2; we also give...
Dr.
Axel Maas
(University of Jena)
04/07/2014, 17:10
The Higgs sector of the standard model, the Higgs and the W/Z bosons, is a quite peculiar theory. Because of the Higgs effect, for some regions of the quantum phase diagram of the theory the observable particles, i.e. gauge-invariant bound states, have the same mass as the elementary particles. This is what makes perturbation theory in the electroweak sector possible. Under which conditions...
Prof.
Tim Greenshaw
(Liverpool University)
04/07/2014, 17:10
The Cherenkov Telescope Array (CTA) is the next generation observatory for ground-based gamma-ray astronomy. Current instruments (HESS, MAGIC and VERITAS) have made huge progress in the observation of cosmic sources of photons in the ~ 50 GeV to ~ 50 TeV energy range using Imaging Atmospheric Cherenkov Telescopes (IACTs). CTA will extend the range of these observations at both low and high...
Mr.
Francisco Escrihuela
(AHEP, University of Valencia)
04/07/2014, 17:15
Several models of neutrino masses predict the existence of neutral heavy leptons. Here, we review current constraints on heavy neutrinos and apply them to inverse and linear seesaw models. We discuss the effect of a fourth heavy neutrino in oscillation experiments
Prof.
Oscar Adriani
(University of Florence and INFN Firenze)
04/07/2014, 17:15
The LHCf experiment is composed by two separate detectors, located at +/- 140 m from the ATLAS interaction region of the LHC accelerator.
The main goal of the experiment is the measurement of the neutral particles production in the very high pseudo-rapidity region (η > 8.4) both in proton-proton and proton-ion collisions. These measurements are extremely useful to calibrate the hadronic...
Mrs.
Agnieszka Dziurda
(The Henryk Niewodniczanski Institute of Nuclear Physics PAS)
04/07/2014, 17:15
The angle γ is the least constrained parameter in the CKM unitarity triangle. Its determination in decays induced by tree-level b→c transitions is largely unaffected by potential new physics contributions. This allows for a consistency check of the unitarity triangle, but also of comparisons with γ determinations from modes with loop-diagrams. We present here a new precise determination of γ...
Kaushik De
(Univ. of Texas at Arlington)
04/07/2014, 17:15
Experiments at the Large Hadron Collider (LHC) face unprecedented computing challenges. Heterogeneous resources are distributed worldwide, thousands of physicists analyzing the data need remote access to hundreds of computing sites, the volume of processed data is beyond the exabyte scale, and data processing requires more than a billion hours of computing usage per year. The PanDA (Production...
909.
A measurement of the electro-weak mixing angle and an indirect measurement of the W mass at CDF
Prof.
Arie Bodek
(University of Rochester)
05/07/2014, 09:00
We report on precision measurements of the electro-weak mixing angle and an indirect measurement of the W mass extracted from the forward-backward asymmetry of both e+e- and mu+mu- Drell-Yan events in the Z boson mass region at CDF.
Mr.
Juan Gonzalez-Fraile
(Universitat de Barcelona)
05/07/2014, 09:00
In a model independent framework, the effects of new physics can be
parametrized in terms of an effective Lagrangian at the electroweak
scale. If the SU(2)L x U(1)Y gauge symmetry is linearly realized,
these effects appear at lowest order as dimension--six operators,
containing all the SM fields an the light scalar doublet. With a
proper choice of the operator basis we perform a global...
Matteo Cacciari
(LPTHE Paris)
05/07/2014, 09:00
Jets are ubiquitous in LHC physics. We will review the advances in algorithms and techniques that have taken place in the past few years, with an emphasis on the role of jet substructure in the analyses of heavy boosted particles.
Dr.
Taikan Suehara
(Kyushu University)
05/07/2014, 09:00
The two detector concepts for the International Linear Collider, SiD and ILD, were described in the Detailed Baseline Design documents, which are part of the ILC Technical Design Report. These designs represented a large body of work on detector prototyping and physics studies. Together, these studies established the feasibility of constructing these detectors to address the full range of the...
Dr.
Antonino Sergi
(University of Birmingham (United Kingdom))
05/07/2014, 09:00
The rare decays K+ ->pi+ nu nu are excellent processes to make tests of new physics at the highest scale complementary to LHC thanks to their theoretically cleaness.
The NA62 experiment at CERN SPS aims to collect of the order of 100 events in two years of data taking, keeping the background at the level of 10%.
Part of the experimental apparatus has been commissioned during a technical run...
Dr.
Juan M Nieves
(IFIC, CSIC-UV)
05/07/2014, 09:00
We discuss some nuclear eects, RPA correlations and 2p2h (multinucleon)
mechanisms, on charged-current neutrino-nucleus reactions that do not produce a pion in the nal state. We study a wide range of neutrino energies, from few hundreds of MeV up to 10 GeV. We also examine the in
uence of 2p2h mechanisms on the neutrino energy reconstruction.
Dr.
donato nicolo
(Pisa University & INFN)
05/07/2014, 09:00
The MEG experiment in search for the lepton-flavour violating muon decay mu -> e gamma completed its data-taking in August 2013.
The new data in 2013 are now being analysed together with the data taken in 2012 with improved analysis algorithms, which will eventually double the total data statistics.
The latest result from the search analysis will be presented.
The status and prospect of...
Mr.
Diptimoy Ghosh
(INFN, Rome)
05/07/2014, 09:15
We perform a global Bayesian fit of the Higgs couplings to the latest experimental data, combining the LHC Higgs data with electroweak precision measurements. We consider an effective Lagrangian for a light Higgs boson, and analyze constraints on the modified Higgs couplings to the SM vector bosons and to the SM fermions. We discuss implications of the fit results for new physics models.
Prof.
Vladimir Obraztsov
(Institute for High Energy Physics, Protvino, Russian Federation)
05/07/2014, 09:15
The decay K+ --> pi0 e+ nu (Ke3) is studied using in-flight decays detected with the "OKA" setup, working in the RF-separated secondary K+ beam of the U-70 synchrotron. About 10M events are available for the analysis. Preliminary results for the parameters of the f+(t) form-factor are presented. For the linear fit: \lambda_{+}=(2.984 \pm 0.04) \times 10^{-2}; ...
Dr.
Heidi Schellman
(Northwestern University (United States))
05/07/2014, 09:15
MINERvA (Main INjector Experiment for v-A) has recently measured neutrino and antineutrino quasi-elastic cross-sections on plastic (CH) scintillator. These results will provide insight into neutrino and anti-neutrino cross sections off of nuclear targets which are important for neutrino oscillation experiments and the probing of the nuclear medium. We will focus on these results and how they...
Dr.
Giulia De Bonis
(INFN)
05/07/2014, 09:18
The discovery of cosmic neutrinos of astrophysical origin by IceCube has started a new chapter in the field of Neutrino Astronomy and has officially initiated the neutrino era in high-energy astrophysics. Noticeably, a small accumulation of events in the region near the Galactic Centre has been observed: a telescope in the Mediterranean Sea constitutes a great opportunity for the physics...
Dr.
Hengne Li
(University of Virginia)
05/07/2014, 09:20
We present a measurement of the W boson mass using D0 Run II data. We select e + neutrino events consistent with a W decay and extract the W boson mass from the distributions of the electron transverse momentum, the neutrino transverse momentum, and the system transverse mass.
Dr.
Bogdan Malaescu
(LPNHE Paris)
05/07/2014, 09:25
Several aspects of the jet production in pp collisions have been measured by the ATLAS collaboration. The measurements of the production cross sections of inclusive, di- and tri-jet events probe the dynamics of QCD and can constrain the parton proton structure. The cross sections are measured using jets clustered with the anti-kT algorithm with different distance parameters and compared to...
Prof.
German Valencia
(Iowa State University)
05/07/2014, 09:30
Physics beyond the standard model (SM) can be parameterized with an effective Lagrangian that respects the symmetries of the standard model and contains many operators of dimension six. We consider the subset of these operators that is responsible for flavor diagonal anomalous color magnetic (CMDM) and electric (CEDM) dipole couplings between quarks and gluons. Invariance of these operators...
Dr.
Richard Gran
(University of Minnesota Duluth)
05/07/2014, 09:30
MINERvA (Main INjector ExpeRiment for neutrino-A) is a few-GeV neutrino nucleus scattering experiment at Fermilab that probes the nuclear environment in both inclusive charged current interactions off various targets, and by studying in detail the process of pion production on Carbon, which itself is sensitive to the nuclear environment through final state interactions. An analysis of the...
Marjorie Corcoran
(Rice U niversity)
05/07/2014, 09:30
We present a measurement of the inclusive single muon charge asymmetry and the like-sign dimuon charge asymmetry in pp(bar) collisions using the full data set of 10.4 fb-1 collected with the D0 detector at the Fermilab Tevatron. The measurements differ from the standard modelpredictions of CP violation in these asymmetries with a significance of 3.6 standard deviations. These results are...
Andrei Gaponenko
(Fermilab)
05/07/2014, 09:30
Mu2e will search for coherent, neutrino-less conversion of muons into electrons in the field of a nucleus with a sensitivity improvement of a factor of 10,000 over existing limits. Such a lepton flavor-violating reaction probes new physics at a scale inaccessible with direct searches at either present or planned high energy colliders. The experiment both complements and extends the current...
Miguel Ardid
(Universitat Politècnica de València)
05/07/2014, 09:35
The ANTARES Collaboration is operating the largest water Cherenkov neutrino telescope in the Northern hemisphere, installed in the Mediterranean Sea. One of the objectives of ANTARES is the search for neutrinos produced in self-annihilation of Dark Matter particles. The results on the search for Dark Matter annihilations in the Sun with the data recorded between 2007 and 2012 are presented....
Dr.
Kristin Lohwasser
(DESY Zeuthen)
05/07/2014, 09:35
The measurement of the WW diboson production cross section in proton-proton interactions is reported from the ATLAS experiment. The analysis requires heavy bosons to decay leptonically, using ee, emu and mumu final states associated with large missing energy. The data are used to test the electroweak sector of the Standard Model and search for evidence for new phenomena. The cross section...
Marcel Demarteau
(Argonne National Laboratory)
05/07/2014, 09:40
Detectors at CLIC are optimised for precision e+e- physics at multi-TeV centre-of-mass energies, as well as for the CLIC-specific beam timing conditions and beam-induced background processes. The talk will provide an overview of these requirements, illustrated on the basis of example physics benchmark processes, and show how optimal physics performance can be achieved under these conditions....
Prof.
Arie Bodek
(University of Rochester)
05/07/2014, 09:45
Spectral functions that are used in modeling of quasi elastic scattering in neutrino event generators such as GENIE, NEUT, NUANCE and NUWRO, and GiBUU include Fermi gas, local Fermi gas, Bodek-Ritche Fermi gas with high momentum tail, and the Benhar Fantoni two dimensional spectral function. We find that the $\frac{d\sigma}{d\nu}$ predictions for these models are in disagreement with...
Dr.
GEORGIOS MAVROMANOLAKIS
(UNIVERSITY OF CYPRUS)
05/07/2014, 09:45
We present CMS results related to jet production cross sections, which pose a central test to perturbative QCD predictions. Results include recent jet, dijet, multijet differential cross section and hadronic event shape measurements performed with 2011 data taken at center-of-mass energy of 7 TeV and 2012 data taken at 8 TeV. Recent Alpha_S extraction results are presented. We also present...
Dr.
Shaouly Bar-Shalom
(Technion, Haifa, Israel)
05/07/2014, 09:45
We use an effective field theory (EFT) prescription to accommodate naturalness in the Standard Model (SM) Higgs sector. We study the 1-loop corrections to the Higgs mass which are generated by the (complete) set of relevant effective operators of dimension n>4, assuming that the SM's degrees of freedom and gauge symmetries are valid up to some new physics scale \Lambda. We find that there are...
Dr.
Paolo Piattelli
(INFN)
05/07/2014, 09:48
The KM3NeT Collaboration has started the first phase of construction of a next generation high-energy neutrino telescope in the Mediterranean Sea. With several cubic kilometres instrumented with thousands optical sensors, KM3NeT will be, when completed, the largest and most sensitive high-energy neutrino detector. Thanks to its location in the Northern hemisphere and to its large instrumented...
Mr.
Christian Gumpert
(IKTP, TU Dresden)
05/07/2014, 09:50
The measurement of production of same-sign WW bosons associated with two forward jets
is reported based on 20 fb-1 of data at sqrt(s) = 8 TeV recorded by the ATLAS experiment.
The measurements are performed in fiducial volumes, sensitive to QCD and Electroweak production mechanisms. The electroweak of component of same-sign WW production is extracted in a fiducial region with large rapidity...
Dr.
Anthony Hillairet
(University of Victoria)
05/07/2014, 10:00
We present the updated measurement of the muon neutrino interaction rates and spectrum at the T2K near detector complex, ND280, located at the JPARC accelerator facility in Tokai, Japan, 280 meters downstream from the target. The measurements are obtained using all the data collected until 2014. The spectrum measured at ND280 off-axis detector constrains the flux and cross section...
Dr.
Juan Jose Sanz-Cillero
(Universidad Autonoma de Madrid - IFT)
05/07/2014, 10:00
In this work we study the $\gamma\gamma\to W^+_L W^-_L$ and $\gamma\gamma\to Z_L Z_L$ scattering processes within the effective chiral Lagrangian approach, including a light Higgs-like scalar as a dynamical field together with the would-be-Goldstone bosons $w^\pm$ and $z$ associated to the electroweak symmetry breaking. This approach is inspired by the possibility that the Higgs-like boson be...
Prof.
Ivanka Bozovic Jelisavcic
(Vinca Institute of Nuclear Sciences)
05/07/2014, 10:00
The very forward region of the detector at a future linear collider will be instrumented with two sampling calorimeters - BeamCal and LumiCal - for fast beam parameter estimates, precise luminosity measurements, as well as for the improvement of the hermeticity of the detector at small angles. These very forward calorimeters are designed to sustain high radiation doses and deliver precise and...
Dr.
eryk czerwinski
(LNF (Frascati, Italy))
05/07/2014, 10:00
The KLOE experiment at the DA$\Phi$NE $\phi$-factory of the INFN
Frascati Laboratory collected data corresponding to 2.5 fb$^{−1}$ of
integrated luminosity.
Neutral kaon pairs produced in phi-meson decays offer a unique possibilità to perform tests of fundamental discrete symmetries. The entanglement of the two kaons is exploited to search for possible violation of CPT symmetry and...
Dr.
Hajime NISHIGUCHI
(KEK)
05/07/2014, 10:00
The COMET Experiment at J-PARC aims to search for the lepton-flavour violating process of muon to electron conversion in a muonic atom, $\mu^{-}N \rightarrow \mathrm{e}^{-}N$, with a branching-ratio sensitivity of $6 \times 10^{−17}$, in order to explore the parameter region predicted by most well-motivated theoretical models beyond the Standard Model. The need for this sensitivity places...
Mr.
Phillip R. Dudero
(Texas Tech University)
05/07/2014, 10:05
Result of merged abstracts:
We present studies of WW, WZ and ZZ diboson production in pp collisions based on data recorded by the CMS detector at the LHC. These include precise measurements the production cross section of these processes at center-of-mass energies of 7 and 8TeV . The leptonic decay modes of the W and Z bosons are used. The results are interpreted in terms of constraints on...
Dr.
Pawel Sopicki
(INP Cracow)
05/07/2014, 10:05
The production of inclusive jets as well as of dijet and trijet
topologies is investigated at HERA. Both the H1 and the ZEUS
experiment have determined the corresponding cross sections with
improved experimental precision, compared to previous
measurements. For both experiments, a hadronic energy scale
uncertainty as small as 1% is reached. The value of the strong
coupling constant...
Mr.
Pablo Fernández
(UAM)
05/07/2014, 10:06
The GADZOOKS! project pursues the upgrade of the Super-Kamiokande (SK)
detector as a way to efficiently detect thermal neutrons. Inverse beta
decay reactions, as well as charged current quasi-elastic (CCQE)
scattering of low energy anti-neutrinos (up to a few hundreds of MeV) in
SK, produce one positron and one neutron in the final state. Being able
to observe the final state neutron in...
Prof.
Chung Kao
(University of Oklahoma)
05/07/2014, 10:15
We adopt a general two Higgs doublet model to study flavor changing neutral Higgs interactions at the LHC.
We focus on the production of a heavy Higgs boson (H) decaying into a top quark and a charm quark with the final state of b c\ell\nu.
In the decoupling limit with a SM-like Higgs scalar (h),
the production (gg \to H) and decay (H \to tc) of H can be sustained by sin(\beta-\alpha) that...
Dr.
Weili Zhong
(Institute of High Energy Physics)
05/07/2014, 10:15
Electron antineutrinos from six 2.9 GW$_{th}$ reactors are detected with six detectors deployed in two near and one far underground experimental halls at Daya Bay. Using 217 days of data, more than 300,000 antineutrino candidates were detected in the three halls. In this talk, a measurement of absolute reactor antineutrino flux and spectrum will be described, including comparisons of the...
Prof.
Vincenzo Branchina
(University of Catania)
05/07/2014, 10:15
One of the scenarios considered in these days explores the possibility
for the SM to be valid up to the Planck scale. The phase diagram for
the stability of the EW vacuum is then derived assuming that new
physics interactions at this scale have no impact on it. In
particular, for the central values of M_H and M_t, the EW vacuum is
metastable, and its lifetime is obtained ignoring new...
Prof.
Jarek Nowak
(U. Lancaster (United Kingdom))
05/07/2014, 10:20
The LBNE experiment will employ liquid argon TPCs for the far
detector, representing a major scale-up from the ICARUS and
MicroBooNE designs. This talk will describe the progress and plans for the
development of the TPC itself, the photon detection system,
electronics and the cryogenic systems. Staging plans and strategies for
scaling up the design towards the planned 34 kt fiducial mass...
Dr.
Nicoletta Mauri
(Università di Bologna and INFN)
05/07/2014, 10:24
The OPERA detector, designed to search for muon- to tau-neutrino oscillations in direct appearance mode, is located in the underground Gran Sasso laboratory, a privileged location to study TeV-scale cosmic rays. Given the large rock depth and the detector’s wide acceptance, the apparatus was used to measure the atmospheric muon charge ratio in the TeV energy region. The muon charge ratio,...
Mr.
Philipp David ELLER
(ETH Zürich, Switzerland)
05/07/2014, 10:25
We present a measurement of the WZ and ZZ production cross sections in proton-proton collisions at 8 TeV in final states where one Z boson decays to b-tagged jets, while the other gauge boson, either W or Z, is detected through its leptonic decay. The results are based on data corresponding to an integrated luminosity of 18.9 /fb collected with the CMS detector at the Large Hadron Collider.
Dr.
Miguel Nebot
(U. of Valencia - IFIC)
05/07/2014, 10:30
Relevant constraints and selected phenomenological implications of a
class of two Higgs doublet models where flavour-changing neutral
currents (FCNC) couplings are suppressed by small entries of the mixing
matrix are analysed. This property of the considered models is the
result of a discrete symmetry of the Lagrangian such that the FCNC are
completely fixed, in the quark sector, by the...
Dr.
Gennady Kozlov
(JINR)
05/07/2014, 10:30
We consider the model containing a dilaton vs Higgs boson in the nearly conformal sector (NCS). The potential of a dilaton in NCS is linearly rising with distances. The light scalar dilaton would be one of the best candidates to explain the LHC data in recent discovery of a Higgs-like resonance around 125 GeV.
Prof.
Alexander Studenikin
(Moscow State University and JINR-Dubna)
05/07/2014, 10:30
A wide review on neutrino electromagnetic properties and interactions is presented, both theoretical and experimental aspects of the problem are discussed. It is shown that these studies open a window to new physics. The talk is based on the recent wide review on the subject available on web since March 25, 2014:
C.Giunti, A.Studenikin, “Electromagnetic interactions of neutrinos: a window...
Dr.
Yohei Nakatsugawa
(High Energy Accelerator Research Organization (KEK))
05/07/2014, 10:30
A new experiment to search for muon to electron conversion in nuclear field, DeeMe, is proposed at J-PARC Materials and Life Science Experimental Facility (MLF). This experiment will be carried out at a brand-new beamline (H-Line) which will be constructed at J-PARC MLF Muon Science Establishment (MUSE).
Muonic atoms formed in a muon production target will be utilized. The signal electrons...
Dr.
Diogo Boito
(Technische Universitaet Muenchen --- TUM)
05/07/2014, 10:35
I present a discussion of recent developments in the QCD
description of hadronic tau decays with emphasis in the perturbative
contribution. The perturbative series is the main ingredient in the
extraction of the strong coupling (alpha_s) from these decays. The
ambiguity due to the different prescriptions regarding the
renormalization group improvement of the series is studied...
Dr.
Francisco Campanario
(IFIC, UV-CSIC)
05/07/2014, 10:40
These processes are important backgrounds to the measurement of the quartic gauge couplings of the Standard Model, to the Higgs signal via vector boson fusion, and to the search for signals of new physics beyond the Standard Model.
We present the first calculation of the next-to-leading order QCD corrections to the QCD-induced ZZ production in association with two jets at hadron colliders....
Prof.
Mikhail Danilov
(ITEP, Representig the DANSS Collaboration (ITEP-JINR))
05/07/2014, 10:40
DANSS is a highly segmented 1m^3 plastic scintillator
detector. It's 2500 scintillator strips have a Gd loaded reflective
cover. Light is collected with 3 wave length shifting fibers per
strip and read out with 50 PMTs and 2500 SiPMs. Light collection uniformity
across and along the strip as well as the photoelectron yield
are adequate to the physics goals of the experiment....
Dr.
Sergio Palomares-Ruiz
(IFIC)
05/07/2014, 10:42
The IceCube experiment has recently reported the observation of 28
high-energy (> 30 TeV) neutrino events, separated into 21 showers
and 7 muon tracks, consistent with an extraterrestrial origin. In this
talk we discuss the compatibility of such an observation with possible combinations of neutrino flavors with relative proportion
(alpha_e:alpha_mu:alpha_tau). Although the 7:21...
Mirco Dorigo
(EPFL)
05/07/2014, 10:45
An essential ingredient of all time-dependent CP violation studies of B mesons is the ability to tag the initial flavour of the B meson. The harsh environment of 7 and 8 TeV pp collisions makes this a particularly difficult enterprise. We report progresses in the flavour tagging of B0 and Bs mesons.
Dr.
Edmond BERGER
(Argonne National Laboratory, USA)
05/07/2014, 10:45
\begin{abstract}
The LHC phenomenology of a low-scale gauged flavor symmetry model with inverted hierarchy is studied. A new scalar (a flavon) emerges with mass in the TeV range along with a new heavy fermion associated with the standard model top quark. After verifying the constraints from electroweak precision observables, we investigate the influence of the model on Higgs boson physics...
Dr.
Carlo Gustavino
(INFN-Roma)
05/07/2014, 10:45
The LUNA experiment plays an important role in understanding open issue of neutrino physics. As an example, two key reactions of the solar p-p chain $^3He(^3He,2p)^4He$ and $^3He(^4He,\gamma)^7Be$ have been studied at low energy with LUNA, providing an accurate experimental input to the Standard Solar Model and consequently to the study of the neutrino mixing parameters. The LUNA collaboration...
Dr.
David d'Enterria
(CERN)
05/07/2014, 10:50
We present a new precise method to extract the QCD coupling constant alpha_s from the energy evolution of the moments of the parton-to-hadron fragmentation functions measured in e+e- annihilation and DIS e-p collisions. The evolution of the moments (multiplicity, peak, width, skewness) of the low momentum charged-hadron distribution in jets is computed at NMLLA+NLO accuracy and compared to the...
Joanna Kiryluk
(Stony Brook University)
05/07/2014, 11:30
The IceCube Neutrino Observatory at the South Pole has powerful capabilities to explore the universe. Two of its primary goals are to observe cosmic neutrinos with TeV energies and above, and to find astrophysical sources of ultra high energy cosmic rays. IceCube is comprised of a cubic kilometer of glacial ice instrumented with 86 vertical strings, each with 60 optical sensors deployed at...
Dr.
Darin Acosta
(Univ. of Florida, United States)
05/07/2014, 11:30
The trigger systems of the LHC detectors play a crucial role in determining the physics capabilities of the experiments. A reduction of several orders of magnitude of the event rate is needed to reach values compatible with detector readout, offline storage and analysis capability. The CMS experiment has been designed with a two-level trigger system: the Level-1 Trigger (L1T), implemented on...
Dr.
Antonin Portelli
(University of Southampton)
05/07/2014, 11:30
Isospin symmetry is explicitly broken in the Standard Model by the non-zero differences of mass and electric charge between the up and down quarks. Both of these corrections are expected to have a comparable size of the order of one percent relatively to hadronic energies. Although these contributions are small, they play a crucial role in hadronic and nuclear physics. We explain how to...
Mr.
Gustavo Conesa Balbastre
(LPSC-CNRS)
05/07/2014, 11:30
Hard-scattered partons are produced early in heavy-ion collisions, prior to the formation of the strongly interacting nuclear medium, the quark-qluon plasma (QGP). These partons lose energy as they traverse the medium and eventually fragment into jets, which exhibit a modification when compared to jets produced in pp collisions. Large transverse momentum (pT) particles, which are proxies for...
Mr.
Martin Stoll
(The University of Tokyo)
05/07/2014, 11:30
Vector-like top partners are introduced in various BSM models. After mixing with third generation quarks, decays to th, tZ and bW are possible. Recent searches at the LHC give M > 700-800 GeV. We propose an algorithm to kinematically reconstruct vector-like tops from fully hadronic final states at the LHC Run II. Larger signal yield is expected because the branching ratio top-to-hadrons is...
Dr.
Roman Nevzorov
(University of Adelaide)
05/07/2014, 11:30
In $N=1$ supergravity (SUGRA) supersymmetric (SUSY) and non-supersymmetric Minkowski vacua originating in the hidden
sector can be degenerate. This allows for consistent
implementation of the multiple point principle (MPP)
assumption. We present no--scale inspired SUGRA model
where the MPP assumption is realised at the tree--level
without extra fine-tuning. In the supersymmetric...
Mr.
Rocky So
(University of British Columbia)
05/07/2014, 11:30
Searches for low mass CP-odd Higgs boson (A0) predicted in non-minimal supersymmetric extensions of the Standard Model, have been performed at BABAR studying the radiative decays of the Y(nS) resonances, with n=1,2,3. Stringent limits on the production of a light Higgs boson have been set from a variety of decay channels, as A0 to lepton pairs, gluon gluon and q qbar.
Mr.
Robin Glattauer
(HEPHY Vienna)
05/07/2014, 11:30
Semileptonic B meson decays, $B \to X \ell \nu$, are currently the preferred modes for determining the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements $|V_{cb}|$ and $|V_{ub}|$, two fundamental parameters of the Standard Model. At the same time they can also be used to test and refine the theoretical tools used for describing B mesons and their decays. Purely leptonic B meson decays, $B \to...
Dr.
Emanuele Re
(University of Oxford)
05/07/2014, 11:35
I will summarize the current status of Monte Carlo tools used for LHC phenomenology and highlight the most recent developments in the field, with a particular focus on the progress made towards a consistent inclusion of higher-order perturbative terms in the simulations.
Dr.
Eric Feng
(Argonne National Laboratory (United States))
05/07/2014, 11:45
Searches for pseudo-scalar Higgs bosons in the context of 2HDM, MSSM, and NMSSM scenarios with the ATLAS detector are presented.
Dr.
Timothy Andeen
(Columbia University)
05/07/2014, 11:45
Various extensions of the Standard Model predict the existence
of new types of quarks. We report on several search channels such as
vector-like quarks decaying to a Higgs boson and a top quark or to
a W boson and a b quark. The talk presents results from
searches for new resonances decaying to a top-antitop pair and a top-antibottom pair,
including the use of boosted top quark...
Dr.
Kristopher Healey
(University of Turin)
05/07/2014, 11:45
We perform a new fit to the moments of various kinematic distributions of inclusive semileptonic B decays, including recently computed higher order effects, and extract Vcb and the parameters of the heavy quark expansion.
Dr.
Garberson Pelin Kurt
(Univ. of Illinois at Chicago, United States)
05/07/2014, 11:50
Jet studies provide experimental means to explore the details of parton-medium coupling and the energy loss mechanisms in QCD matter. In this talk an overview of recent jet and high-pT measurements from 2.76 TeV PbPb and pp collisions with the CMS detector will be presented. Additionally, the latest CMS jet results from pPb collisions at 5.02 TeV will be discussed in the context of initial...
Prof.
Antonella De Santo
(Univ. of Sussex (UK))
05/07/2014, 11:50
Plans for a physics-driven upgrade of the LHC foresee staged increases of the accelerator's average instantaneous luminosity, of up to a factor of five compared to the original design.
In order to cope with the sustained luminosity increase, and the resulting higher detector occupancy and particle interaction rates, the ATLAS experiment is planning phased upgrades of the trigger system and of...
Thomas Gaisser
(University of Delaware)
05/07/2014, 11:54
Neutrinos produced by cosmic-ray interactions in the Earth's atmosphere are a background in the search for neutrinos of astrophysical origin. In addition, they provide a beam that can be used for calibration and to study neutrino properties, such as oscillations. Several issues that arise in evaluating the atmospheric neutrino spectrum up to the PeV range will be addressed in this...
Prof.
Gopinath Kamath
(Indian Institute of Technology Madras)
05/07/2014, 12:00
This talk has two highlights: a. The utility of the Dirac δ – function as an aid to repetitive integration in multiple integrals, and b. An extension to 3 + 1 dimensional stationary curved space of a recent effort by the author in 2 + 1 dimensional stationary curved space to determine the zeta function for the Lagrangian density for a real massive scalar field using the Schwinger operator...
Gregorio Herdoiza
(KPH Mainz & IFT Madrid)
05/07/2014, 12:00
The anomalous magnetic moment of the muon, g-2, is one of the most
promising observables to identify the signs of physics beyond the
Standard Model. QCD contributions are currently responsible for the
largest fraction of the overall theoretical uncertainty in the
determination of the muon g-2, and in the running of the QED coupling
constant. Studies of the vacuum polarisation function and...
Dr.
Roman Kogler
(University of Hamburg, Germany)
05/07/2014, 12:00
In many models of physics beyond the Standard Model the coupling of new physics to third generation quarks is enhanced. We present a review of searches for heavy particles beyond the standard model decaying to final states with top and bottom quarks. This includes searches for heavy gauge bosons and excited states, as well as vector-like quarks. The searches span a range of final states, from...
Dr.
Brian Hamilton
(University of Maryland)
05/07/2014, 12:00
LHCb has recorded large samples of semileptonic decays of c- and b-flavoured hadrons. We review the latest results in semileptonic decays of B, Bs and Λb decays. Recent results on CP violation and determination of CKM matrix elements are shown.
Prof.
Rick Field
(Florida)
05/07/2014, 12:00
We present results from a recent CDF study of min-bias collisions (MB) and the "underlying event" (UE) using charged particles produced in proton-antiproton collisions at 300 GeV, 900 GeV, and 1.96 TeV. The 300 GeV and 900 GeV data are a result of the "Tevatron Energy Scan" which was performed just before the Tevatron was shut down. The direction of the leading charged particle in each event,...
Dr.
Barbara Krystyna Wosiek
(Polish Academy of Sciences (Poland))
05/07/2014, 12:10
Jets provide a powerful tool for probing the dynamics of the quark-gluon plasma created in Pb+Pb collisions at the LHC. The modification of high-pT parton showers as they propagate in the quark-gluon plasma, often referred to as "jet quenching", provides insight on the short-distance dynamics of the plasma. Jet quenching has been observed in a variety of single jet, dijet, and photon-jet...
Andrea Alberti
(University of Turin)
05/07/2014, 12:15
We review the status of the calculation of higher order corrections to inclusive
semileptonic B decays, with emphasis on recent developments concerning the perturbative corrections to power suppressed effects and their impact on the determination of Vcb.
Dr.
Frederik Ruehr
(University of Freiburg)
05/07/2014, 12:15
Discovering new physics beyond the Standard Model is a primary goal of research at the LHC.
Recent searches by ATLAS and CMS, using data taken at a centre-of-mass energy of 8 TeV, have
already probed a considerable fraction of the parameter space for a wide variety of models.
The discovery reach is expected to be considerably extended at higher energy. The high-luminosity
phase of...
Dr.
Oleg Zenin
(IHEP Serpukhov)
05/07/2014, 12:15
Particle distributions sensitive to the underlying event in proton-proton collisions have been measured with the ATLAS detector at the LHC at 7 TeV centre-of-mass energy. Various and complementary measurements are presented, e.g. charged particle multiplicity, charged and inclusive sum transverse momentum densities and mean charged-particle transverse momentum in the regions of each event, ...
Keith Bechtol
(KICP / University of Chicago)
05/07/2014, 12:18
Ultra-high energy (UHE, >10^18 eV) cosmic neutrinos are anticipated to reveal the most distant, most obscured, and highest energy particle accelerators in the Universe. An almost guaranteed flux of UHE neutrinos is predicted from the interactions of UHE cosmic rays with the cosmic microwave background, and additional contributions may arise from prompt emission at individual sources. The...
Dr.
Thomas Lück
(University of Victoria)
05/07/2014, 12:30
The experimental knowledge of semileptonic B decays to a D or D* meson with one or more pions is limited. These limitations are relevant to two experimental puzzles: the tension between the values of Vcb determined from inclusive and exclusive semileptonic decays, and the gap between the sum of the exclusive semileptonic B decays to charm and the inclusive b -> c l nu rate. The full BABAR...
Dr.
Sebastian Sapeta
(CERN)
05/07/2014, 12:30
I will discuss a new method of including NLO QCD corrections to the hard process in the LO Monte Carlo (MC) shower. The method is based on the recently proposed MC factorization scheme, which dramatically simplifies the NLO coefficient functions. The NLO corrections are introduced by a simple reweighing of the events produced by the LO shower, with a single, positive MC weight. I will show a...
Dr.
Eigo Shintani
(Mainz Univ.)
05/07/2014, 12:30
I would like to present current progress of lattice calculation of muon g-2 for light-by-light contribution. We forcus on the lattice calculation of non-perturbative contribution to neutral pion to two-photon decay transition form factor in light-by-light diagram. In this talk I will also compare with the direct computation in QED+QCD lattice simulation.
Dr.
Lesya Shchutska
(Univ. of Florida, United States)
05/07/2014, 12:30
Aspects of the Supersymmetry & other BSM search programme for the High Luminosity LHC are discussed. These include the expected discovery reach for strongly and weakly interacting Susy particles. We also discuss some example measurements the HL-LHC will allow if evidence of new physics is found during Run 2 or Run 3 of the LHC.
Dr.
Eva Vilella
(University of Barcelona)
05/07/2014, 12:30
After the recent discovery of the Higgs boson, refined measurements need to be done to unravel the properties of the new particle with high precision. These measurements will be performed in great part at future linear colliders, namely the International Linear Collider (ILC) and the Compact LInear Collider (CLIC). Nevertheless, the physics goals at the mentioned facilities impose such extreme...
Mr.
Alexis Moscoso Rial
(Universidade de Santiago de Compostela)
05/07/2014, 12:30
It is shown that the anomalous sharp increasing of the strength of the near-side ridge structures
observed in Au-Au collisions at \sqrt{s} = 62 GeV and \sqrt{s} = 200 GeV and the onset of the ridge structure
in pPb and in pp collisions can be naturally explained in the framework of string percolation. In all
the cases the near-side strength reflects the collision area covered by the strings...
Prof.
Koji Hashimoto
(Osaka university / RIKEN)
05/07/2014, 12:30
We analyze vacuum instability of strongly coupled gauge theories in a constant
electric field using AdS/CFT correspondence. The model is the N = 2 1-flavor
supersymmetric large Nc QCD in the strong ’t Hooft coupling limit. We calculate the
Euler-Heisenberg effective Lagrangian L(E), which encodes the nonlinear response
and the quantum decay rate of the vacuum in a background electric field E,...
Dr.
Martin Wiebusch
(IPPP Durham)
05/07/2014, 12:35
The precise determination of the Higgs boson couplings (and their comparison with the SM predictions) will be one of the major goals of future collider experiments. To estimate the possible size of signals for physics beyond the SM, such as models with an extended Higgs sector, global analyses of all currently available data are necessary. In this talk I report on the results of our...
Dr.
Robert Lahmann
(Erlangen Centre for Astroparticle Physics (ECAP))
05/07/2014, 12:42
The acoustic neutrino detection technique is a promising approach for future large-scale detectors with the aim of measuring the small expected flux of cosmogenic neutrinos at energies exceeding 100 PeV. The technique is based on the thermo-acoustic model, which implies that the energy deposition by a particle cascade - resulting from a neutrino interaction in a medium with suitable thermal...
Dr.
Mikael Berggren
(DESY)
05/07/2014, 12:45
Although the LHC experiments have put strong limits on coloured supersymmetric states, it is still possible that electroweakly interacting supersymmetric particles have masses in the range 100-200 GeV. Even outside of supersymmetry, candidates for the particle of dark matter may have masses in this range unconstrained by LHC data. In e+e- annihilation, the low backgrounds, precise knowledge of...
Dr.
Dipanwita Dutta
(Scientist and Associate Professor, Bhabha Atomic Research Centre, Mumbai)
05/07/2014, 12:45
We present recent results on Minimum Bias, MPI and DPS, and Diffractive and Exclusive studies using data collected during Run 1 of the LHC. The measurements include data collected in p-p collisions at sqrt(s) = 2.76, 7, and 8 TeV by the CMS and TOTEM collaborations. Double parton scattering is investigated in several final states including vector bosons and jets, and the effective cross...
Dr.
Arantza Oyanguren
(IFIC- Valencia)
05/07/2014, 12:45
The charm semileptonic decay $D \to \pi e \nu$ has been measured by several experiments. Conversely to other semileptonic decays, this channel presents the interest that contributions from the two first poles can be predicted. We have computed accurately in LQCD the ratio of decay constants $f_{D^\ast}/f_D$ making the evaluation of the $D^\ast$-pole contribution quite accurate. Measurements of...
Ms.
Mariko Kikuchi
(University of Toyama)
05/07/2014, 12:50
We calculate one-loop corrected Yukawa coupling constants hff for the standard model (SM) like Higgs boson h in two Higgs doublet models with the softly-broken $Z_2$ symmetry. Under the $Z_2$ symmetry, four types of models with different Yukawa interactions appear. We find that one-loop contributions from extra Higgs bosons change maximally about several % from tree level hff couplings under...
Dr.
Enrico Meggiolaro
(University of Pisa (ITALY))
05/07/2014, 12:50
We discuss the role of the U(1) axial symmetry for the scalar and pseudoscalar meson mass spectrum of QCD at finite temperature, above the chiral transition at T_c, using a chiral effective Lagrangian model, which, in addition to the usual chiral condensate, also includes a (possible) genuine U(1)_A-breaking condensate that (possibly) survives across the chiral transition. The motivations for...
Prof.
David Hitlin
(Caltech)
05/07/2014, 12:50
The Mu2e experiment will search for neutrinoless conversion of muons into electrons in the field of an aluminum nucleus. The signature of this process is a 105 MeV electron. Precise and robust measurement of the outgoing electron momentum, along with powerful background rejection, are essential elements of the experiment. We describe the unique features of the low-mass straw tube tracker and...
Dr.
Jonna Koponen
(University of Glasgow)
05/07/2014, 12:50
We describe a new technique (presented in arXiv:1403.1778) to determine the contribution to the anomalous magnetic moment of the muon coming from the hadronic vacuum polarization using lattice QCD. Our method uses Padé approximants to reconstruct the Adler function from its derivatives at q^2=0. These are obtained simply and accurately from time-moments of the vector current-current correlator...
Mr.
Sascha Turczyk
(University of Mainz)
05/07/2014, 13:00
There exist a long standing tension among determinations of the CKM matrix element $|V_{ub}|$ from various (semi)leptonic $B$ decay channels with varying significance of up to $\sim 3\sigma$. An interesting possibility to ease this tension is to allow for a right-handed contribution to the standard model left-handed weak current mediating the $b\rightarrow u$ quark decay. The current bounds on...
Dr.
Hasko Stenzel
(Giessen University)
05/07/2014, 13:00
The ATLAS measurement of the total p-p cross section at the LHC at sqrt(s)= 7 TeV is presented. In a special LHC run with high betastar beam optics corresponding to an integrated luminosity of 80 inverse microbarn the elastic scattering process is measured in the range of the momentum transverse t from -t=0.0025 GeV^{2} to -t=0.38 GeV^{2} with the ALFA detector of ATLAS. From the extrapolation...
Dr.
torrente-lujan emilio
(universidad de murcia)
05/07/2014, 13:00
We present a detailed description of $N=2$ stationary
BPS multicenter black hole solutions for quadratic prepotentials
with an arbitrary number of centers and scalar fields
making a systematic use of the algebraic properties of the matrix of second derivatives of the prepotential, $\mathcal{S}$, which in this case is a scalar-independent matrix. In particular we obtain bounds on the...
Dr.
Philipp Roloff
(CERN)
05/07/2014, 13:00
The Compact Linear Collider (CLIC) is an attractive option for a future multi-TeV linear electron-positron collider. A staged construction in several centre-of-mass energy steps from a few hundred GeV up to 3 TeV is foreseen. At high energies, CLIC provides sensitivity to a wide range of phenomena beyond the Standard Model through direct observation of new particles and precision...
Dr.
Oscar Gonzalez Lopez
(CIEMAT (Madrid, Spain)), Dr.
Oscar Gonzalez Lopez
(CIEMAT)
05/07/2014, 13:05
Searches for a high-mass Higgs boson decaying into WW and ZZ channels has been carried out using data collected at centre-of-mass energies of 7 and 8 TeV at the LHC collider, corresponding to integrated luminosities of 5/fb and 20/fb, respectively. Many different final states have been considered and upper limits on the Higgs boson production cross section have been derived. The results are...
Prof.
Alicia Sintes
(Universitat de les Illes Balears)
05/07/2014, 13:06
The ground-based world-wide network of gravitational-wave laser interferometers has the ambitious goal of the first direct detection of gravitational waves. Their detection will provide a fundamental, new tool to probe the universe, with information on supernovae, colliding black holes and rotating neutron stars. In this talk I will give an overview of the status of the gravitational wave...
Santiago Peris
(U. Autonoma de Barcelona, Spain)
05/07/2014, 13:10
(See Attached file.)
In order to test the systematic error coming from the extrapolation at low $Q^2$ carried out in present lattice determinations of the hadronic vacuum polarization contribution to the muon anomalous magnetic moment, we employ a physically motivated model for the isospin-one non-strange vacuum polarization function $\Pi(Q^2)$ [1]. The model is based on the OPAL...
Dr.
Dmytro Volyanskyy
(Max-Planck-Institut für Kernphysik)
05/07/2014, 13:15
Its forward acceptance puts the LHCb in a unique position at the LHC to measure soft QCD phenomena at large rapidities and low transverse momenta. Recent results on charged particle multiplicity production, energy flow, and inclusive cross-sections are presented.
Mark Neubauer
(University of Illinois at Urbana-Champaign)
05/07/2014, 13:20
Since the discovery of a Higgs boson by the ATLAS and CMS experiments at the LHC, the emphasis has shifted towards
determining whether the new particle is the Standard Model (SM) Higgs boson. The search for additional Higgs boson states
addresses this question. In particular the search for high mass states decaying to diboson final states could shed
light on the structure of the...
Mr.
Carlos Naya
(Universidade de Santiago de Compostela and Instituto Galego de Física de Altas Enerxías (IGFAE))
05/07/2014, 15:00
In this talk, we will present a concrete model of a low energy effective field theory of QCD, the well-known Skyrme Model. Specifically, we will work with the BPS submodel [1] in order to describe the binding energies of nuclei. This BPS Skyrme model is charaterized by having a saturated bound for the energy proportional to the baryon number of the nuclei. After presenting this classical...
Prof.
Akira Yamamoto
(KEK/CERN)
05/07/2014, 15:00
The International Linear Collider (ILC) has been proposed for a next generation, energy frontier, e+e- colliding accelerator. The Technical Design Report (TDR) was published in 2013, and the project is getting into the transition of the "Design to Realization" stage. The report will describe the ILC accelerator design and technology as well as future prospect of the project anticipated to be...
Prof.
Chara Petridou
(Aristotle University of Thessaloniki)
05/07/2014, 15:00
ATLAS measurements of multi-boson production processes involving combinations of W, Z and isolated photons are summarized. Measurements using 7 TeV and at 8 TeV p-p collision data are presented. The measurements are performed using leptonic decay modes, including the invisible decay Z--> nunu, as well as semileptonic channels. Differential and total cross sections are presented and are used to...
Mr.
Luis Pesantez
(University of Bonn)
05/07/2014, 15:00
The radiative B decays proceed through a loop diagram and are sensitive to New Physics. We perform measurements of the branching fraction of $B \to X_s \gamma$, where $X_s$ is the hadronic state with strangeness. Using a semi-inclusive method in which $X_s$ is
reconstructed with 38 exclusive modes, the inclusive branching fraction in $M_{X_s} < 2.8$ GeV is measured. We also report the...
Dr.
Seth Conrad Zenz
(Imperial College London)
05/07/2014, 15:00
Projections for the expected performance of an upgraded CMS detector are presented for various Higgs property measurements planned for the high luminosity running period of the LHC.
Prof.
Charles Jui
(University of Utah, Telescope Array)
05/07/2014, 15:00
The Telescope Array (TA) is the largest ultrahigh energy cosmic ray detector in the northern
hemisphere. The experiment consists of three fluorescence stations viewing the air space over
a surface array of 503 scintillation counters deployed over 700 square kilometers. TA has been
in operation since 2008. The most recent results from TA, including that of composition studies
and search for...
Jan Hasenbusch
(Bonn University)
05/07/2014, 15:00
Searches for exotic phenomena at Belle are presented.
Dr.
Lars Eklund
(University of Glasgow)
05/07/2014, 15:00
The upgrade of the LHCb experiment, planned for 2018, will transform
the experiment to a trigger-less system reading out the full detector
at 40 MHz event rate. All data reduction algorithms will be executed
in a high-level software farm with access to the complete event
information. This will enable the detector to run at luminosities of
2 x 10^33 /cm^2/s and probe physics beyond the...
Dr.
Daniel Tapia Takaki
(The University of Kansas)
05/07/2014, 15:00
Protons and ions accelerated by the LHC carry an electromagnetic field, which acts as a source of photons. The beam energy at the LHC makes it the most energetic photon source ever built. The interaction of such high-energy photons with nuclei (or protons) can be studied in ultra-peripheral heavy-ion collisions, where the impact parameter is larger than the sum of the nuclear radii and...
Mr.
Will Parker
(University of Wisconsin - Madison)
05/07/2014, 15:15
We present a measurement of the W boson pair production cross section in ppbar collisions at sqrt(s) = 1.96 TeV. The WW candidates are reconstructed from decays containing two charged leptons and two neutrinos, where the charged leptons are either electrons or muons. The measurement is performed using data collected by the CDF II detector from 9.7 fb−1 of integrated luminosity. The total and...
Dr.
Eugeni Grauges
(U. de Barcelona (UB))
05/07/2014, 15:15
In b -> s gamma transitions, the standard model predicts that B0 (antiB0) decays are related predominantly to the presence of right (left) handed photons in the final state. Therefore, the mixing-induced CP asymmetry in B -> fCP decays, where fCP is a CP eigenstate, is expected to be small. This prediction may be altered by new-physics (NP) processes in which opposite helicity photons are...
Dr.
Reina Camacho
(Université de Genève)
05/07/2014, 15:20
Run-I at the LHC has been very successful and included the discovery of a new particle with mass of about 125 GeV compatible within uncertainties with the Higgs boson predicted by Standard Model.
In this talk, the Higgs physics prospects at the high-luminosity LHC are presented, assuming an energy sqrt(s) = 14 TeV and a data sample of 3 ab-1. In particular, the ultimate precision attainable...
Dr.
Chia-Ming Kuo
(National Central University (China))
05/07/2014, 15:20
The electroweak bosons are insensitive to final state effects in heavy-ion collisions and thus make excellent probes of the initial state parton distributions in nuclei. This talk presents measurements of photons and weak bosons, via their leptonic decay channels, in pp and PbPb collisions at 2.76 TeV and in pPb collisions at 5.02 TeV.
Dr.
Markus Ebert
(SLAC, USA)
05/07/2014, 15:20
Searches for exotic phenomena at Babar are presented.
Mr.
Giacomo Contin
(Lawrence Berkeley National Laboratory - LBNL)
05/07/2014, 15:20
The heavy quark hadrons are suggested as a clean probe for studying the early dynamic evolution of the dense and hot medium created in high-energy nuclear collisions.
The Heavy Flavor Tracker (HFT) of the STAR experiment, designed to improve the vertex resolution and extend the measurement capabilities in the heavy flavor domain, was installed for the 2014 heavy ion run of RHIC.
It is...
Prof.
Mostafa Miguel
(Penn State University)
05/07/2014, 15:25
The Pierre Auger Observatory is the largest cosmic ray detector ever built. It was designed to detect the highest energy particles in the Universe, and it has been taking data since 2004. Our published results range from the measurement of the flux suppression at the highest energies to limits on ultra high energy neutrinos, from limits on the flux of EeV neutrons from the galaxy to the...
Prof.
Steinar Stapnes
(CERN)
05/07/2014, 15:25
The Compact Linear Collider (CLIC) project explores the possibility of constructing a future multi-TeV linear electron-positron collider for high energy frontier physics post LHC. The CLIC-concept is based on high gradient normal-conducting accelerating structures. The RF power for the acceleration of the colliding beams is produced by a two beam acceleration scheme, where power is extracted...
Dr.
Ioannis Papadimitriou
(Instituto de Fisica Teorica UAM/CSIC)
05/07/2014, 15:30
Holographic techniques have been instrumental in understanding certain aspects of strongly correlated systems, both in high energy and condensed matter physics. One of the most interesting applications of holography in the condensed matter setting is the study of quantum critical points exhibiting Lifshitz or hyperscaling violating Lifshitz symmetry. Although various aspects of the holographic...
Dr.
Hisaki Hayashii
(Nara Women's University)
05/07/2014, 15:30
We present preliminary result of the measurement of Michel parameters in leptonic $\tau$ decays and search for the Electric Dipole Moment of the $\tau$ lepton using the world-largest $\tau$ data sample collected by the Belle detector at the KEKB collider. Michel parameters are extracted from $(\tau^{\mp}\to\ell^{\mp}\nu\nu$, $\tau^{\pm}\to\pi^{\pm}\pi^0\nu)$ and...
William Trischuk
(University of Toronto)
05/07/2014, 15:40
With the first three years of the LHC running complete, ATLAS and CMS are planning to upgrade their innermost tracking layers with more radiation hard technologies. Chemical Vapor Deposition (CVD) diamond is one such technology. CVD diamond has been used extensively in beam condition monitors as the innermost detectors in the highest radiation areas of BaBar, Belle, CDF and all LHC...
Dr.
Marisilvia Donadelli
(Universidade de Sao Paulo (Brasil))
05/07/2014, 15:40
Measurements of vector boson production in Pb+Pb collisions provide
essential control data for studies of jets and jet quenching in the
quark gluon plasma. Because the electroweak bosons do not interact
strongly in the plasma measurements their production rates can be
predicted using standard high-energy event generators. In addition,
the vector boson spectra are potentially sensitive...
Ricardo Vazquez Gomez
(Universitat de Barcelona)
05/07/2014, 15:40
Searches for exotic phenomena at LHCb are presented.
Prof.
Gerald Eigen
(University fo Bergen)
05/07/2014, 15:45
We use the large dataset collected with the BABAR detector to measure the branching fractions and CP asymmetries of the inclusive decays B -> Xs l+ l- and B -> Xs gamma. We adopt a sum-of-exclusive-states method, whereby 20 different final states are selected.
The branching fraction and CP asymmetry for B -> Xs l+ l- are measured in intervals of q2 (di-lepton invariant mass) and also in bins...
Dr.
Satoshi Mishima
(University of Rome "La Sapienza")
05/07/2014, 15:45
We present the updated global fits of the Standard Model and beyond to the electroweak precision data, taking into account the Higgs mass measurements at the LHC and recent progress in theoretical calculations. We use the up-to-date theoretical expressions for the partial widths of the Z boson which include the full two-loop fermionic electroweak contributions. From the global fits, we derive...
Prof.
Bennie Ward
(Baylor University)
05/07/2014, 15:50
We use our resummed quantum gravity approach to Einstein's general theory of relativity in the context of the Planck scale cosmology formulation of Bonanno and Reuter to estimate the value of the cosmological constant as $\rho_\Lambda =(0.0024 eV)^4. We show that the closeness of this estimate to experiment constrains susy GUT models. We also address various consistency checks on the calculation.
Mr.
Marçà Boronat Arevalo
(PHD student)
05/07/2014, 15:55
The DEPFET Collaboration develops highly granular, ultra-thin pixel detectors for outstanding vertex reconstruction at future collider experiments. A DEPFET sensor, by the integration of a field effect transistor on a fully depleted silicon bulk, provides simultaneously position sensitive detector capabilities and in-pixel amplification. The characterization of the latest DEPFET prototypes has...
Prof.
Miguel-Angel Sanchis-Lozano
(IFIC - University of Valencia)
05/07/2014, 15:55
Most signatures of new physics in colliders have been studied on the transverse plane with respect to the beam direction. In this work we consider the impact of a hidden sector (e.g. hidden valley models) beyond the SM on inclusive longitudinal (pseudo)rapidity correlations and factorial moments of multiplicity distributions in pp inelastic collisions, with special emphasis in the forthcoming...
Prof.
Joakim Nystrand
(University of Bergen)
05/07/2014, 16:00
The strong electromagnetic fields surrounding the protons and heavy
nuclei accelerated at the CERN Large Hadron Collider may be used to
study two-photon and photon-proton/nucleus interactions at
unprecedented energies. A process of particular interest is two-photon
production of pairs of W bosons. This process is sensitive to the
coupling between photons and W bosons, and may therefore...
Mr.
Nacho Garcia
(PhD student)
05/07/2014, 16:00
Result of merged abstracts:
The future precision studies of the Standard Model require excellent knowledge of the top quark mass, to an accuracy of 100 MeV or better. This mass can be measured in a way that is free of any ambiguities from soft QCD by locating the threshold position for e+e- annihilation to top quarks, or, more precisely, the mass of the unstable 1S resonance. The...
Prof.
William Bardeen
(Fermilab)
05/07/2014, 16:00
I demonstrate the existence of a massive phase in a conformally invariant U(N)
Chern-Simons gauge theory in D=3 with matter fields in the fundamental representation. These
models have attracted recent attention as being dual, in the conformal phase, to theories of
higher spin gravity on AdS_4. Using the ‘t Hooft large N expansion, exact solutions are
obtained for scalar current...
Dr.
Kajari Mazumdar
(TIFR - EHEP, India)
05/07/2014, 16:00
Measurements of rare B meson decay properties provide an alternative approach to direct searches for physics beyond the Standard Model. These decays, which proceed through flavor-changing neutral currents, can have interferences from new physics through loop diagrams. In particular, the angular distribution of the decay B to K(*) mu+mu- can be measured as a function of the square of the dimuon...
Dr.
Silvia MOLLERACH
(CONICET, Centro Atomico Bariloche)
05/07/2014, 16:08
The large angular scale distribution of UHECRs is expected to become an important tool to infer CR properties in the near future, as a considerable statistics is being gathered by the Pierre Auger and TA observatories. Here we obtain the dipolar anisotropy of cosmic crays diffusing from nearby extragalactic sources. We discuss both the energy regime of spatial diffusion and the...
Dr.
Siba Prasad Das
(IOP, Bhubaneswar, India)
05/07/2014, 16:10
Non-universal gaugino mass models can naturally account for the
dark matter relic density via the bulk annihilation process with relatively light Bino LSP and right sleptons in the mass range of ~ 100 GeV, while accommodating the observed Higgs boson mass of ~ 125 GeV with TeV scale squark/gluino masses. A class of these models can also account for the observed muon g-2 anomaly via SUSY loops...
Prof.
Philip Burrows
(Oxford University)
05/07/2014, 16:15
Future lepton colliders such as the International Linear Collider (ILC), and the Compact Linear Collider (CLIC) require nanometer-sized beams at the interaction point (IP). We report on the design, protoyping and testing of beam-based feedback systems for steering the beams into collision at the IP so as to maximise the luminosity performance of the colliders. Both all-analogue and digital...
Mr.
Manqi RUAN
(IHEP and CERN)
05/07/2014, 16:15
Now that the masses of the Higgs and Top quark are known, circular electron positron colliders, able to measure the properties of these particles with high accuracy, are receiving considerable attention. As part of the Future Circular Collider study at CERN, the Future e+e- Circular Collider, FCC-ee, (formerly called TLEP) is a new generation collider, fitting in a 80 to 100km tunnel, and able...
Rong-Shyang Lu
(National Taiwan University)
05/07/2014, 16:15
The silicon pixel detector is the innermost component of the CMS tracking system and plays a crucial role in the all-silicon CMS tracker.
While the current pixel tracker is designed for and performing well at an instantaneous luminosity of up to 1*10^{34}cm^{-2} s^{-1}, it can no longer be operated efficiently at significantly higher values. Based on the strong performance of the LHC...
Prof.
Michael Klasen
(Institute for Theoretical Physics, University of Münster)
05/07/2014, 16:20
We present a rigorous theoretical analysis of the ALICE measurement of low-p_T direct-photon production in central lead-lead collisions at the LHC with a centre-of-mass energy of \sqrt{s_{NN}}=2.76 TeV. Using NLO QCD, we compute the relative contributions to prompt-photon production from different initial and final states and the theoretical uncertainties coming from independent variations of...
Dr.
Graziano Venanzoni
(LNF-INFN Frascati)
05/07/2014, 16:25
The anomalous magnetic dipole moment of the muon can be both measured and computed to very high precision, making it a powerful probe to test the standard model and search for new physics such as SUSY. The previous measurement by the Brookhaven E821 experiment found a 3.6 standard deviation discrepancy from the predicted value. The new g-2 experiment at Fermilab will improve the precision by a...
Dr.
Alexander Karelin
(MEPhI)
05/07/2014, 16:27
The PAMELA apparatus is in orbit from 2006 for today. The magnetic spectrometer, being the main part of the equipment, has a finite size and as a consequence the upper limit of energy measurements with it does not exceed 1 TeV. Therefore, to extend the available energy range towards higher energies the calorimeter data should be used. With the method based on the calorimeter data the energy...
Dr.
Alessandro Fabbri
(Centro Fermi / Univ. Bologna / IFIC (CSIC))
05/07/2014, 16:30
We present a family of exact solutions, depending on two parameters
alpha and b (related to the scalar field strength), to the three-dimensional Einstein-scalar field equations with negative cosmological constant.
For b = 0 these solutions reduce to the static BTZ family of vacuum
solutions, with mass M =-alpha. For nonvanishing b, the solutions become
dynamical and develop a strong...
Prof.
Chung Kao
(University of Oklahoma)
05/07/2014, 16:30
The results from the LHC indicate that the couplings of the Higgs boson to other particles are consistent with the Standard Model. However the final and ultimate test as to whether this particle
is the standard Higgs boson will be the coupling of the Higgs boson to itself. We study the Higgs pair production from gluon fusion at the LHC and try to determine how accurately the trilinear Higgs...
Dr.
Lars Hofer
(IFAE Barcelona)
05/07/2014, 16:30
The exclusive decay B-->K^* mu mu has gained a lot of attention
because the recent LHCb angular analysis has indicated significant
deviations from the Standard Model which could be interpreted as a possible first signal of new physics. The sensitivity of theory
predictions to hadronic input parameters can be minimized be choosing
an optimized set of observables. On the other hand,...
Roberto Tenchini
(INFN Pisa)
05/07/2014, 16:35
As part of the Future Circular Collider study at CERN, the Future e+e- Circular Collider, FCC-ee, (formerly called TLEP) is a new generation collider, able to fit in a 80 to 100km tunnel, and able to deliver high luminosity in up to four interaction points from at least the Z peak to above the top pair threshold.
The luminosity at the Z pole and W pair threshold are over 2.5 and 1.2...
Dr.
Giulia Manca
(University of Cagliari)
05/07/2014, 16:40
The production of J/ψ and Υ-mesons decaying into dimuon final state is studied at the LHCb experiment, with rapidity 1.5 < y < 4.0 or -5.0 < y < -2.5 and transverse momentum pT < 15 GeV/c, in proton-lead collisions at a proton-nucleon centre-of-mass energy of 5 TeV. The analysis is based on a data sample corresponding to an integrated luminosity of 1.6/nb. The forward-backward production ratio...
Ms.
Seyda Ipek
(University of Washington)
05/07/2014, 16:40
I consider a general two-Higgs-doublet model with CP violation. I give a perturbative expansion for the mass eigenstates in terms of the small CP-violating phase. I use these analytical expressions to show that O(0.01) CP violation is allowed by the experimental bounds on the electron electric dipole moment in some regions of the parameter space. These regions also include parameters that are...
Prof.
et al. D0 Collaboration
(Fermi National Accelerator Laboratory)
05/07/2014, 16:45
We present new lifetime measurements of B mesons, using 10.4 fb-1 of proton-antiproton collisions collected by the D0 detector during Run II at the Fermilab Tevatron Collider. We report an update of the B_s^0 lifetime in semi-inclusive flavor-specific decays B_s^0 -> mu nu D_s X (and charge conjugate). We account for the missing energy from the neutrino and other possible undetected decay...
Dr.
Stefan Berge
(RWTH Aachen)
05/07/2014, 16:45
We investigate the measurement of the CP mixing angle
of the 126 GeV neutral spin-0 Higgs boson in its tau decay
channels. The tau decay channel of the Higgs boson
has the particular advantage that possible CP-violating
contributions alter the Higgs-tau-tau coupling already at
the leading order. Within our proposed method the
di-lepton, lepton-hadron as well as the hadron-hadron...
Prof.
Valery Telnov
(Budker INP and Novosibirsk Univ.)
05/07/2014, 16:45
High energy photon colliders (γγ,γe) based on Compton scattering of laser photons on high energy electrons are considered for many years as a natural option for e+e- linear colliders. Photon colliders can study New Physics at energies and statistics similar to those in e+e−collisions—but in different reactions. In some cases, photon colliders provide access to higher masses or allow the study...
Mr.
Valerio Vagelli
(Karlsruhe Institute for Technology), Dr.
Zhili Weng
(Massachusetts Institute of Technology)
05/07/2014, 16:46
Origin of high energy positrons in cosmic rays remains highly uncertain. In addition to being produced in the interactions of cosmic ray nuclei with interstellar media they may be produced in nearby pulsars, in the annihilation of Dark Matter particles or in a yet unknown process. The nature of the production mechanisms are expected to influence the abundance of cosmic-ray positrons and...
Dr.
Aleksandrs Aleksejevs
(Grenfell Campus of Memorial Univeristy)
05/07/2014, 16:50
The talk will outline the recent results on the two-loop electroweak contributions to the electron-electron scattering cross sections and asymmetries.
Of course, the two-loop corrections are strongly suppressed relative to the one-loop corrections, but they still contribute a few percent to the cross section, and even this small contribution cannot be ignored at for ultraprecision...
Dr.
Anthony Palladino
(Laboratori Nazionali di Frascati dell'INFN)
05/07/2014, 16:55
In some models of physics beyond the Standard Model it is
predicted the existence of light neutral vector particles
(U bosons) mediator of new gauge interactions under
which ordinary matter is uncharged. Motivated by astrophysical
considerations, their mass, M_U, is expected to be of order
1 GeV or ligther.
These new particles can be observed as sharp resonances at M_U...
Prof.
Robert L. Byer
(Stanford University)
05/07/2014, 17:00
Laser acceleration in dielectric structures offers a new approach to the next generation of accelerators. The recently demonstrated gradient of 300MeV/m is a first step toward an accelerator system with all essential elements designed to be fabricated on a chip using modern lithographic methods. Progress on beam position and the future possibilities of X-ray generation with a dielectric...
Dr.
Diogo Boito
(Technische Universitaet Muenchen --- TUM)
05/07/2014, 17:00
In this work we study in detail the phenomenological impact of
anomalous Higgs couplings in angular asymmetries of the crossing
symmetric processes H--->Zll and e+e- --> HZ. Beyond Standard Model (BSM) physics is parametrized in terms of the SU(3)xSU(2)xU(1) dimension six effective Lagrangian. In the light of present bounds on d=6 interactions we study how angular asymmetries can reveal...
Dr.
Jibo HE
(CERN)
05/07/2014, 17:00
Electroweak penguin b-hadron and c-hadron decays are very sensitive to physics beyond the Standard Model. Recent LHCb measurements have shown indications of large unexpected asymmetries in B→K*μμ and the first observation of the photon polarisation in b→sγ decays. We report the most recent LHCb results in this sector.
Vivian de la Incera
(University of Texas at El Paso)
05/07/2014, 17:00
An important part of the current research efforts in QCD is focused on finding the phases of nuclear matter that occur at finite densities and temperatures. While the zero density, finite temperature region can be addressed with the help of lattice QCD, and the zero temperature, very high-density region can be explored with weak-coupling QCD, for the strong-interaction region of intermediate...
Dr.
Svetlana Barkanova
(Acadia University)
05/07/2014, 17:05
The best way to search for new physics is by using a diverse set of probes - not just experiments at the energy and the cosmic frontiers, but also the low-energy measurements relying on high precision and high luminosity.
One example of ultra-precision experiments is MOLLER planned at JLab, which will measure the parity-violating electron-electron scattering asymmetry and allow a...
Dr.
Theopisti Dafni
(Universidad de Zaragoza)
05/07/2014, 17:10
After almost 25 years since their suggestion as a good solution to the strong CP-problem, axions remain one of the viable candidates for the Dark Matter, although still eluding detection. Most of the methods for their detection are based on their coupling to photons, one of the most promising ones being the helioscope technique.
We will report on the current status of the CERN Axion Solar...
Dr.
Makoto Miura
(Kamioka observatory, ICRR)
05/07/2014, 17:10
Nucleon decay search is one of key for opening a door to Grand Unified Theories (GUTs). A favored proton decay mode by GUTs based on SU(5) symmetry is p-->e^+pi^0. On the other hand, SUSY moderated GUTs prefer p-->nuK^+. The Super-Kamiokande, a large water cherenkov detector, has been running more than 10 years and it is suitable for the nucleon decay search. In this talk, the latest results...
Dr.
Nuno Leonardo
(Purdue University / LIP)
05/07/2014, 17:15
Rare beauty meson decays B_s,d to mu+mu- are searched in pp collisions at LHC using a data sample collected by the CMS experiment. These decays are highly suppressed in the standard model. They can only proceed through the flavor-changing neutral currents, which are forbidden at tree-level diagrams. These decays are an excellent probe of new physics: any difference between the measured...
Prof.
Shou-hua Zhu
(ITP, Peking University)
05/07/2014, 17:15
The charged Higgs boson is quite common in many new physics models. In this study we examine the potential of observing a heavy charged Higgs boson in its decay mode of top-quark and bottom-quark in the Type-II Two-Higgs-Doublet-Model. In this model, the chirality structure of the coupling of charged Higgs boson to the top- and bottom-quark is very sensitive to the value of \tan\beta. As the...
Dr.
Beatrice Mandelli
(Oslo University (Norway))
05/07/2014, 17:15
The Pixel Detector of the ATLAS experiment has shown excellent performance
during the whole Run-1 of LHC. Taking advantage of the long showdown, the detector was extracted from the experiment and brought to surface, to equip it with new service quarter panels, to repair modules and to ease installation of the Insertable B-Layer (IBL).
IBL is a fourth layer of pixel detectors,...
Dr.
Hiroshi Yokoya
(University of Toyama)
05/07/2014, 17:20
It is known that the parity-odd (P-odd) observables without spin measurements are naive-T-odd at the same time, and the naive-T-odd distributions arise from the absorptive part of the scattering amplitudes.
We study the P-odd and naive-T-odd asymmetries at the one-loop level in W+jet production and top-quark radiative decay processes, and their observabilities at collider experiments such as...
Carolina Gómez-Zarzuela Irigoyen
(Responsable de Relaciones Institucionales e Internacionales. Subdirección de Filatelia. Correos.)
05/07/2014, 18:00
Prof.
Rolf-Dieter Heuer
(CERN)
05/07/2014, 18:15
Dr.
Lyn Evans
(CERN)
05/07/2014, 18:45
Dr.
Sergio Bertolucci
(CERN)
05/07/2014, 19:15
Dr.
José Miguel Jiménez
(CERN)
05/07/2014, 20:00
Prof.
lyndon evans
(cern)
06/07/2014, 09:00
Michael Harrison
(BNL)
06/07/2014, 09:30
Prof.
Steinar Stapnes
(CERN)
06/07/2014, 10:50
Hitoshi Yamamoto
(Tohoku University)
06/07/2014, 11:35
Sachio Komamiya
(University of Tokyo)
06/07/2014, 14:00
Sachio Komamiya
(University of Tokyo)
06/07/2014, 14:30
Francois Le Diberder
(LAL),
Harry Weerts
(ANL), Prof.
Jie GAO
(IHEP, Beijing, China),
Lenny Rivkin
(PSI)
06/07/2014, 14:40
Yasuhiro Okada
(KEK)
06/07/2014, 16:00
Atsuto Suzuki
(KEK)
06/07/2014, 16:20
Nigel Lockyer
(Fermilab)
06/07/2014, 16:40
06/07/2014, 17:10
Yifang Wang
(IHEP/Beijing)
06/07/2014, 18:10
06/07/2014, 18:30
06/07/2014, 18:40
06/07/2014, 18:45
Mrs.
Maria José Catalá
07/07/2014, 09:10
Dr.
Carmen Vela
(MICIN)
07/07/2014, 09:20
Prof.
Alan Guth
(Massachusetts Institute of Technology)
07/07/2014, 09:30
Dr.
Marumi M. Kado
(LAL-Orsay (France))
07/07/2014, 10:45
Dr.
André David
(CERN)
07/07/2014, 11:15
Prof.
Christophe Grojean
(ICREA/IFAE (Spain))
07/07/2014, 11:45
Dr.
Frank Wuerthwein
(UC San Diego (United States))
07/07/2014, 12:15
Dr.
Marcela Carena
(Fermilab (Unites States))
07/07/2014, 12:45
Dr.
Roger Carlini
(Jefferson Lab (United States))
07/07/2014, 13:15
Dr.
Jeffrey Berryhill
(Fermilab (United States))
07/07/2014, 15:00
Dr.
Gregorio Bernardi
(LPNHE-Paris 6&7/CNRS-IN2P3 (France))
07/07/2014, 15:30
Dr.
Ayres Freitas
(University of Pittsburgh)
07/07/2014, 16:00
Prof.
Peter Uwer
(Humboldt-Universität zu Berlin (Germany))
07/07/2014, 17:00
Prof.
Tatsuya Nakada
(EPFL)
07/07/2014, 18:00
Prof.
Ian Shipsey
(University of Purdue)
07/07/2014, 18:10
Prof.
Mitsuaki Nozaki
(KEK)
07/07/2014, 18:30
Prof.
Manfred Krammer
(HEPHY-Vienna)
07/07/2014, 18:50
07/07/2014, 19:10
Dr.
Johannes Albrecht
(TU Dortmund (Germany))
08/07/2014, 08:30
Prof.
Thomas E Browder
(University of Hawaii (United States))
08/07/2014, 09:00
Prof.
Gino Isidori
(University of Zurich (Switzerland))
08/07/2014, 09:30
Prof.
Johannes P. Wessels
(Univ. Muenster (Germany))
08/07/2014, 10:00
Prof.
Charles Gale
(McGill Univ. Montreal (Canada))
08/07/2014, 10:30
Prof.
Paolo Nason
(INFN Milano-Bicocca (Italy))
08/07/2014, 11:30
Dr.
Chiara Roda
(University and INFN of Pisa (Italy))
08/07/2014, 12:00
Dr.
Haiping Peng
(Univ. of Science and Technology (China))
08/07/2014, 12:30
Prof.
Aida X El-Khadra
(University of Illinois (United States))
08/07/2014, 13:00
Prof.
Manfred Lindner
(MPI Heidelberg, (Germany))
08/07/2014, 15:00
Dr.
Marco Zito
(IRFU-Saclay)
08/07/2014, 15:30
Dr.
Srubabati Goswami
(Physical Research Laboratory (PRL) , (India))
08/07/2014, 16:00
Dr.
Henrique Araujo
(Imperial College London (United Kingdom))
08/07/2014, 16:30
Prof.
James M. Matthews
(Louisiana State University (United States))
08/07/2014, 17:00
Dr.
Javier Berdugo
(CIEMAT)
08/07/2014, 17:20
Prof.
Christian Stegmann
(DESY (Germany))
08/07/2014, 17:40
Dr.
Roger O'Brient
(California Institute of Technology (United States))
08/07/2014, 18:30
Dr.
José Miguel Jiménez
(CERN)
08/07/2014, 18:30
Prof.
Jie GAO
(IHEP, Beijing, China)
08/07/2014, 18:35
Prof.
Akira Yamamoto
(KEK/CERN)
08/07/2014, 18:40
Dr.
Stephen Peggs
(BNL)
08/07/2014, 18:45
Dr.
José Manuel Pérez
(CIEMAT)
08/07/2014, 18:50
08/07/2014, 18:55
Prof.
E. Martinez-Gonzalez
(Instituto de Fisica de Cantabria (Spain))
08/07/2014, 19:00
Dr.
Eleonora Presani
(ELS-AMS)
09/07/2014, 08:30
Dr.
Heidi Schellman
(Northwestern University (United States))
09/07/2014, 08:40
Dr.
Claude Duhr
(University of Durham (United Kingdom))
09/07/2014, 09:20
Dr.
Kerstin Tackmann
(DESY (Germany))
09/07/2014, 09:40
Dr.
Jose L. F. Barbón
(IFT UAM/CSIC (Spain))
09/07/2014, 10:00
Dr.
Alexander Kappes
(ECAP, Univ. of Erlangen-Nürnberg (Germany))
09/07/2014, 10:30
Dr.
Richard Mount
(SLAC National Accelerator Laboratory (United States))
09/07/2014, 11:30
Prof.
P. P. Allport
(University of Liverpool (United Kingdom))
09/07/2014, 12:00
Dr.
N. J. Walker
(DESY Hamburg (Germany))
09/07/2014, 12:30
Dr.
Hans Peter Beck
(Universitat Bern (Switzerland))
09/07/2014, 13:00
Prof.
Young-Kee Kim
(University of Chicago (United States))
09/07/2014, 15:00
Prof.
Juan Antonio Fuster Verdu
(IFIC (Instituto de Fisica Corpuscular))
09/07/2014, 17:00
Ms.
Michela D'Onofrio
(Helsinki University)
Astroparticle Physics and Cosmology
Poster
We use large-scale lattice simulations to compute the rate of baryon number violating processes (the sphaleron rate), the Higgs field expectation value, and the critical temperature in the Standard Model across the electroweak phase transition temperature.
While there is no true phase transition between the high-temperature symmetric phase and the low-temperature broken phase, the...
Ms.
SOUAD SEMLALI
(LPHEA,FSSM, Cadi Ayyad University)
Beyond the Standard Model
Poster
Models of electroweak symmetry breaking with extended Higgs sectors are
theoretically well motivated.
In this study, we investigate the phenomenology of the new Yukawa
couplings in generic two-Higgs-doublet models. We find that
a heavy charged Higgs together with $\alpha, \tan\beta\sim O(1)$,
type-II and III could enhance the two-photon production cross section;
however, with large...
Ms.
Currás Rivera Esteban
(Instituto de Física de Cantabria (CSIC-UC))
Detector RD and Performance
Poster
Position sensitivity in semiconductor detectors of ionizing radiation is usually achieved by the segmentation of the sensing diode junction in many small sensing elements read out separately as in the case of conventional microstrips and pixel detectors. Alternatively, position sensitivity can be obtained by splitting the ionization signal collected by one single electrode amongst more than...
Dr.
Gauhar Abbas
(IFIC, Valencia)
Strong Interactions and Hadron Physics
Poster
The moments of the hadronic spectral functions are of interest for the extraction of the strong coupling αs and other QCD parameters from the hadronic decays of the τ lepton. Motivated by the recent analyses of a large class of moments in the standard fixed-order and contour-improved perturbation theories, we consider the perturbative behavior of these moments in the framework of a QCD...
Dr.
Carlos Lourenco
(CERN)
Strong Interactions and Hadron Physics
Poster
Quarkonium polarization data, usually considered a difficult challenge for the QCD description of quarkonium production and relegated to an a posteriori test of predictions exclusively driven by cross-section measurements (with puzzling results), provide in reality the most fundamental, direct and model-independent connection to the production mechanisms. Simultaneously fitting charmonium and...
Glenn Jocher
(University of Hawaii)
Neutrino Physics
Poster
The miniTimeCube (mTC) is the world's smallest neutrino detector. The two liter plastic scintillator target is viewed by 24 Photonis 64 anode PMTs (1536 pixels in total), has a single pulse resolution of <100ps with waveform recording up to 12 microseconds. Analysis of data from the UH manufactured PMT mounted digitization electronics will provide critical event discrimination. Tests at...
Simone Amoroso
Beyond the Standard Model
Poster
This poster presents a model-independent general search for new phenomena in proton-proton collisions at a centre-of-mass energy of 8 TeV with the ATLAS detector at the LHC. The data set corresponds to a total integrated luminosity of 20.3/fb. Event topologies involving isolated electrons, photons and muons, as well as jets, including those identified as originating from b-quarks and missing...
Max Klein
(University of Liverpool)
Detector RD and Performance
Poster
The Large Hadron Electron Collider (LHeC) is a proposed facility that will exploit the LHC beams for electron-proton/nucleus scattering, using a new 60 GeV electron accelerator. Here we present the detector concept for the measurement of precision deep inelastic scattering phenomena, with the reconstruction of Higgs decay final states with maximum acceptance as benchmark. We also discuss the...
Mr.
Nacho Garcia
(PhD student)
Strong Interactions and Hadron Physics
Poster
Full-simulation studies of jet reconstruction at future e+e- colliders at the energy frontier have shown that the overlaid energy deposits due to the gamma gamma -> hadrons background can have an important impact on the performance. We present a new sequential recombination algorithm for e+e- colliders and compare its performance to the most commonly used jet reconstruction algorithms. The...
Dr.
Nameeqa Firdous
(University of Innsbruck)
Strong Interactions and Hadron Physics
Poster
A parameter study of PYTHIA6 Multiple Parton Interaction (MPI) using best fit to the data published by ATLAS Collaboration is presented. Altogether thirteen parameters are investigated to find the most sensitive parameters to the selected data. This type of study helps in better understanding of different parameters needed to be used in PYTHIA6 tunes.
Dr.
Murli Verma
(University of Lucknow)
Astroparticle Physics and Cosmology
Poster
It is proposed that a single Higgs-like tachyonic cosmological scalar field generates the late-time acceleration of the universe due to interaction among its components. It is found that the B-mode polarization can also be obtained from the tensor perturbations arising from the present acceleration. This may contribute to the relatively high value of the tensor-to-scalar ratio...
Mr.
chw xiao
(IFIC)
Strong Interactions and Hadron Physics
Poster
In present work we investigate the interaction of $\bar B N$, $\bar B \Delta$, $\bar B^* N$ and $\bar B^* \Delta$ states, together with their coupled channels. We consider the heavy quark spin symmetry for pion exchange and reproduces the results of the Weinberg Tomozawa term, coming from light vector exchanges in the extended local hidden gauge approach. With this dynamics we search states...
Pierfrancesco Butti
Detector RD and Performance
Poster
ATLAS is a multipurpose experiment at the LHC proton-proton collider. In order to reconstruct trajectories of charged particles, ATLAS is equipped with a tracking system built using different technologies, silicon planar sensors (pixel and micro-strip) and gaseous drift-tubes, all embedded in a 2T solenoidal magnetic field. For the LHC Run II, the system is being upgraded with the installation...
Carmen Garcia
(IFIC), Mr.
Pepe Bernabeu
(IFIC)
Education and Outreach
Poster
Semiconductor devices are widely used as radiation sensors in many physics applications. They are of uttermost importance in the High Energy Physics experiments as tracking devices and extensively used in Nuclear Physics for spectroscopy. Moreover, silicon sensors have an increasing number of applications in imaging Medical Physics where their low cost, miniaturization, packaging and...
Dr.
Elmer Ramirez Barreto
(Universidade Federal do ABC)
Beyond the Standard Model
Poster
In this work, we present one construction involving the 3-3-1 model with heavy leptons plus an abelian factor with charge B-L. The major characteristic of this class of models: the relation between the number of families and the chiral anomalies cancellation, is mantained when the anomalies associated with the BL charge are too included. Some implications about the phenomenology of the model...
Dr.
María Martínez
(UZ)
Astroparticle Physics and Cosmology
Poster
ANAIS (Annual modulation with NAI Scintillators) experiment will look for dark matter annual modulation with 250 kg of ultra-pure NaI(Tl) scintillators at the Canfranc Underground Laboratory (LSC), aiming to confirm the DAMA/LIBRA positive signal in a model-independent way. The detector will consist in 20 close-packed single modules, each of them coupled to two high efficiency Hamamatsu...
Mr.
Satendra Kumar
(Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781 039, India)
Brout-Englert-Higgs physics
Poster
One of the main processes to study the Higgs self-coupling, HHH is e+e− → ZHH. There had been studies on how precisely this coupling can be determined at ILC through this process. This process is also dictated by the couplings of the Higgs boson with the gauge boson, especially ZZH coupling. Presence of anomalous ZZH, ZγH, and ZZHH couplings, may change the process on HHH coupling. Here, we...
Mr.
Aleksei Ezhilov
(PNPI)
Computing and Data Handling
Poster
Electron and photon triggers are essential for signal selection in a
wide variety of ATLAS physics analyses to study Standard Model
processes and to search for new phenomena. Final states including
leptons and photons had, for example, an important role in the
discovery and measurement of the Higgs particle. Dedicated triggers
are also used for the collection of J/ψ →e+ e− , W→ eν and...
Dr.
Steven Goldfarb
(University of Michigan)
Education and Outreach
Poster
The heart and soul of nearly any major communication effort (at least during the post-web era) is its public home page. This is the platform that introduces the audience to the look, feel and purpose of the organization. It is where one learns of goals and accomplishments, news and features, general principles, specific details, and where to find more information about the latest discovery....
Ms.
VICTORIA SANCHEZ MARTINEZ
(IFIC (CSIC-UV), Valencia)
Top-quark and ElectroWeak Physics
Poster
An overview is given of the ATLAS searches for new massive states decaying to top quark pairs. The combination of classical, resolved selection and reconstruction of the top quark pair with an algorithm designed specifically for boosted top quarks yields good acceptance for a broad range of resonance masses. A new result is presented from an analysis of 20/fb of proton-proton collisions...
Dr.
Steven Goldfarb
(University of Michigan)
Education and Outreach
Poster
ATLAS Virtual Visits is a project initiated in 2011 for the Education & Outreach program of the ATLAS Experiment at CERN. Its goal is to promote public appreciation of the LHC physics program and HEP, in general, through direct dialogue between ATLAS physicists and remote audiences.
A Virtual Visit is an IP-based videoconference, coupled with a public webcast and video recording, between...
Dr.
Mohammad Ahmady
(Mount Allison University)
Strong Interactions and Hadron Physics
Poster
We use the light front wave functions obtained from the AdS/QCD model for light mesons to calculate the transition form factors for B to \rho, K* decays. We analyze the semileptonic B->\rho l nu and radiative B->K* mu+mu- decays and point out the distinctive features of the AdS/QCD model.
Kazuya Mochizuki
Detector RD and Performance
Poster
The identification of b-quarks jets (b-tagging) is a crucial ingredient in many physics analyses carried out in the ATLAS experiment at the LHC. In this poster, we present the status of b-tagging algorithms and their performance calibration. In particular, new tagging algorithms with improved c-jet rejection and extending to high jet pt are discussed, as well as recent improvements and...
Dr.
Camille Beluffi
(Univ. Catholique de Louvain, Belgium)
Detector RD and Performance
Poster
A large fraction of the CMS physics program relies on the identification of jets containing the decay of a B hadron (b jets). The b jets can be discriminated from jets produced by the hadronization of light quarks based on characteristic properties of B hadrons, such as the long lifetime or the presence of soft leptons produced during their decay.
An overview of the large variety of...
Miquel Nebot-Guinot
(IFIC)
Neutrino Physics
Poster
NEXT (Neutrino Experiment with a Xenon TPC) is a neutrinoless double-beta (bb0nu) decay experiment that will operate at the Canfranc Underground Laboratory (LSC). It is an electroluminescent high-pressure gaseous xenon Time Projection Chamber based on separated-function capabilities for calorimetry and tracking. Energy resolution and background suppression are the two key features of any...
Mr.
Tamas Almos Vami
(Wigner Research Centre for Physics)
Detector RD and Performance
Poster
The Compact Muon Solenoid (CMS) is one of two general-purpose detectors that reconstruct the products of high energy particle interactions at the Large Hadron Collider at CERN. The silicon pixel detector is the innermost component of the CMS tracking system. It determines the trajectories of charged particles originating from the interaction region in three points with high resolution enabling...
Prof.
Bennie Ward
(Baylor University)
Top-quark and ElectroWeak Physics
Poster
With an eye toward the precision physics of the LHC, FCC-ee and possible high energy muon colliders, we present the extension of the CEEX (coherent exclusive
exponentiation) realization of the YFS approach to resummation in our KK MC to include the processes $f\bar{f}\rightarrow f'\bar{f'}, f=\mu,\tau, q,\nu_\ell, f'=e, \mu,\tau, q, \nu_\ell, q=u,d,s,c,b,t, \ell =e,\mu,\tau with f \ne f'....
Claire David
Beyond the Standard Model
Poster
Searches for direct production of chargino (chi1) and neutralino (xi2) leading to final states characterized by the presence of a Higgs boson are reported. Events containing missing transverse momentum and one or more leptons are selected, and various channels sensitive to different Higgs decays are considered. The analyses use 20.3 fb−1 of proton–proton collision data at s√ = 8 TeV recorded...
Mr.
Bob Velghe
(UC Louvain (Belgium))
Strong Interactions and Hadron Physics
Poster
New final results from an analysis of about 400 K+- --> pi+- gamma gamma rare decay candidates collected by the NA48/2 and NA62 experiments at CERN during low intensity runs with minimum bias trigger configurations are presented. The results include a model-independent decay rate measurement and fits to Chiral Perturbation Theory (ChPT) description. The data support the ChPT prediction for a...
Renato Fonseca
(IFIC - Valencia)
Neutrino Physics
Poster
Flavour symmetries have been used to constrain both quark and lepton mixing parameters. In particular, they can be used to completely fix the mixing angles. For the lepton sector, assuming that neutrinos are Majorana particles, we have derived the complete list of mixing patterns achievable in this way, as well as the symmetry groups associated to each case. Partial computer scans done in the...
Prof.
Min-Zu Wang
(Dept. of Physics, National Taiwan Univ.)
Strong Interactions and Hadron Physics
Poster
Fragmentation functions (FFs) describe the formation of final state particles from a partonic initial state and are directly related to the QCD phenomenon of confinement. Precise knowledge of these functions is a key ingredient in accessing quantities such as the nucleon spin structure in semi-inclusive deep inelastic scattering (SIDIS) and proton-proton collisions. Using Belle data, we study...
Dr.
Hee Yeun Kim
(University of Texas at Arlington (US))
Brout-Englert-Higgs physics
Poster
We present the combined study of the Higgs boson in the H->WW->lvlv channel the full 25 fb-1 of data
collected at 7 and 8 TeV center of mass energy collected by the ATLAS experiment at the LHC.
In particular, the extractions of the signal yields from the combination of the major production modes
and their associated signal strengths will be presented presented. The interpretation of...
Prof.
Bennie Ward
(Baylor University)
Strong Interactions and Hadron Physics
Poster
We present the current status of the comparisons with the respective data of the predictions of our approach of exact amplitude-based resummation in quantum field theory as applied to precision QCD calculations as needed for LHC physics, using the MC Herwiri1.031. The agreement between the theoretical predictions and the data exhibited continues to be encouraging.
Dr.
Michael Finger
(Charles University in Prague)
Detector RD and Performance
Poster
The Drell-Yan (DY) process is considered to be a powerful tool to study hadron structure. A new generation of polarized DY measurements using unpolarized pion beam and polarized target is under the preparation at COMPASS experiment at CERN. One of the key experimental tasks here is the modification of the unique COMPASS low temperature polarized target for Drell-Yan experiment which is the...
Dr.
Alexander Quiroga
(Pontifícia Universidade Católica do Rio de Janeiro)
Neutrino Physics
Poster
We show that precision measurement of (1) sum of neutrino masses by cosmological observation and (2) lifetime of neutrinoless double beta decay in ton-scale experiments, with supplementary use of (3) effective mass measured in single beta decay experiment, would allow us to obtain information on the Majorana phase of neutrinos. To quantify the sensitivity to the phase we use, in addition to...
Mr.
Davide Sgalaberna
(ETH Zurich)
Neutrino Physics
Poster
One of the main issues in modern accelerator neutrino experiments is
a relatively poor knowledge of the initial neutrino flux, due in
particular to a large uncertainty on the production of hadrons
that decay into neutrinos.
T2K is a long baseline neutrino experiment that aims to precisely
measure the parameters of the PMNS matrix and to look for the first
indication of CP violation in...
Mrs.
Elisa Fioravanti
(INFN Ferrara)
Strong Interactions and Hadron Physics
Poster
We study the processes gamma gamma -> K+ K- eta and gamma gamma -> K+ K- pi0 using a data sample of 519 fb^-1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at and near the Upsilon(nS) (n = 2,3,4) resonances.
We observe eta_c -> K+ K- eta and eta_c -> K+ K- pi0 decays, measure their relative branching fraction,...
Dr.
Yusheng Wu
(University of Michigan (United States))
Detector RD and Performance
Poster
To maximize the physics reach for the high energy and high luminosity LHC, the ATLAS collaboration plans to build and install a new small wheel (nSW) detector with eight layers of MicroMegas (MM) detector and eight layers of small-strip Thin Gap Chambers (sTGC) to improve the Level-1 muon triggering as well as the offline muon precision tracking. For the sTGC trigger path, both pad and strip...
Dr.
Michal Zamkovsky
Strong Interactions and Hadron Physics
Poster
The NA48/2 Collaboration at CERN has accumulated unprecedented statistics of rare kaon decays in the Ke4 modes Ke4(+-) to pi+ pi- e nu and Ke4(00) to pi0 pi0 e nu with ~one percent background contamination. The detailed study of form factors is sensitive to small isospin symmetry breaking effects. This brings new inputs to low energy QCD description
and crucial tests of predictions from...
Mr.
Carlos Hidalgo
(Becario)
Strong Interactions and Hadron Physics
Poster
We study the X(3872) to D bar{D} pi^0 decay within a molecular D bar{D}^* picture for the X(3872) state. This mode is more sensitive to the long-distance structure of the X(3872) resonance than its J/\psi\pi\pi and J/\psi 3pi$ decays, which are mainly controlled by the details of the X(3872) wave function at short distances. We show that the D bar{D} final state interaction can be...
Dr.
Antonio Marrone
(University of Bari and INFN Bari)
Neutrino Physics
Poster
This study is being performed in collaboration with E. Lisi (INFN, Bari, Italy) and F. Capozzi (U. of Bari, Italy). The low-energy IceCube extension experiment, PINGU, will allow to probe the neutrino mass hierarchy and the \theta_23 octant. We perform a prospective analysis of PINGU data in a three neutrino oscillation framework, by varying all relevant neutrino oscillation parameters and...
Ms.
aparajita dattagupta
(ATLAS and Indiana University)
Detector RD and Performance
Poster
Precision measurements of jets produced in pp collisions at the LHC are of key importance to analyses measuring Standard Model processes or searching for new physics. To account for signal losses in the detector, the energy of calorimeter jets needs to be calibrated. In ATLAS, jets are calibrated in multiple steps using techniques driven by both Monte Carlo simulations and data. The jet energy...
Mr.
Sergey Koldobskiy
(NRNU MEPhI)
Astroparticle Physics and Cosmology
Poster
In this work the results of data analysis of the deuterons and protons albedo radiation obtained in the PAMELA experiment are presented. PAMELA is an international cosmophysical experiment carried out on board of the satellite Resurs DK-1. The high precision detectors allows to registrate and identify cosmic ray particles in a wide energy range. The deuteron-proton ratio in the energy range 90...
Prof.
Yoshiyuki Fukuda
(Miyagi University of Education)
Neutrino Physics
Poster
An organic liquid scintillator containing zirconium complex was studied for neutrinosless double beta decay (ZICOS) experiment. A $^{96}$Zr nuclei has a large Q-value (3.35MeV), and no experiment is planned to use as a target. In order to realize ton scale target isotope with good energy resolution (4\%@2.5MeV), we have used zirconium beta-diketon complex which has huge solubility (over...
Mr.
Francesc Monrabal Capilla
(IFIC)
Neutrino Physics
Poster
The NEXT ββ0ν experiment will use a high-pressure gas electroluminescent TPC to search for the decay of 136Xe. The development, construction and installation of NEXT-WHITE (NEW), the first radio-pure version of NEXT, will take place this year at Laboratorio Subterr ́aneo de Canfranc. NEW will run initially using 10 kg of natural xenon during which time NEXT technology will be validated and the...
Yuji Sudo
(Kyushu University)
Detector RD and Performance
Poster
The best jet energy resolution required for precise physics measurements at ILC is achievable using a Particle Flow Algorithm (PFA) and highly granular calorimeters. As it was shown by CALICE international R&D collaboration, the silicon-tungsten imaging electromagnetic calorimeter provides the best granularity, stability and jet resolution. After proving the PFA concept with physical...
Swagata Mukherjee
(Saha, India)
Brout-Englert-Higgs physics
Poster
This poster presents differential cross section measurements of the Higgs boson, performed in the diphoton decay channel. The dataset corresponds to 19.7 fb$^{-1}$ data of pp collisions at $\sqrt{s}$ = 8 TeV, produced by the LHC and collected by the CMS detector in the year 2012. With its high signal selection efficiency, the diphoton decay channel is very well suited to probe the underlying...
Dr.
Bugra Bilin
(Middle East Technical Univ., Turkey)
Top-quark and ElectroWeak Physics
Poster
In this poster, differential Z + jet cross section measurements with respect to the number of jets and various jet kinematic variables are presented where the Z bosons are reconstructed from opposite sign electron and muon pairs. The analysis is based on data of proton proton collisions with the centre of mass energy of 8 TeV collected in 2012 by the CMS experiment at LHC corresponding to 19.8...
Mr.
Eric Takasugi
(UCLA)
Top-quark and ElectroWeak Physics
Poster
We present a measurement of the differential vector boson transverse momentum cross-section of Z plus jets in proton-proton collisions. The data are collected with the CMS detector at $\sqrt{s}=8\,\mathrm{TeV}$, corresponding to an integrated luminosity of $19\,\mathrm{fb}^{-1}$. It is shown that the precise measurement allows for stringent test of (high multiplicity) NLO perturbative QCD...
Dr.
Paolo Iengo
(CERN)
Strong Interactions and Hadron Physics
Poster
We present cross-section measurement of double-J/psi production at ATLAS. The analysis separates the prompt-prompt, prompt-non-prompt and non-prompt di-J/psi production. A contribution from double parton scattering is estimated. The results are compared with the latest theoretical calculations in the colour singlet and colour octet formalisms.
Ms.
maura graziani
(INFN)
Astroparticle Physics and Cosmology
Poster
AMS-02 is a large acceptance cosmic ray detector which has been installed in the International Space Station ISS in May 2011, where it is collecting cosmic rays up to TeV energies.
A primary cosmic ray research topic is the search for Dark Matter indirect signatures in the lepton fluxes. AMS-02 is providing cosmic lepton data with an unprecedented precision.
Such a physics goal has been...
Dr.
Aleksandrs Aleksejevs
(Grenfell Campus of Memorial Univeristy)
Strong Interactions and Hadron Physics
Poster
The Chiral Perturbation Theory (ChPT) has been tremendously successful in describing low-energy hadronic properties in the non-perturbative regime of Quantum Chromodynamics.
The results of ChPT, many of which are currently under active experimental investigation, provide stringent predictions of many fundamental properties of hadrons, including quantities such as electromagnetic...
Mr.
Marco Peruzzi
(ETH Zurich)
Detector RD and Performance
Poster
The performance of the electron and photon reconstruction and selection with the CMS detector at sqrt(s) = 8 TeV will be presented. After a short description of the reconstruction algorithms, the selection criteria will be presented and their performance assessed using decays of the Z, J/Psi and Y particles. The data to Monte Carlo simulation scale factors are found close to unity for a large...
Jovan Mitrevski
Detector RD and Performance
Poster
An excellent performance of the reconstruction, calibration and identification
of electrons and photons with the ATLAS detector at the LHC is a key component
to realize the ATLAS full physics potential, both in searches for new physics
and in precision measurements. For instance, all these played a critical role
in the discovery of a Higgs boson, announced by the ATLAS Collaboration in...
Dr.
Theopisti Dafni
(Universidad de Zaragoza)
Neutrino Physics
Poster
Xenon-trimethylamine (TMA) mixtures are particularly interesting in the framework of rare event searches with gaseous Time Projection Chambers (TPC): first because gain measurements indicate that they form a Penning mixture, anticipating a 'supra-intrinsic' energy resolution stemming from the initial ionization and, second, because TMA is known to strongly fluoresce around 300nm, a convenient...
Mr.
Ander Simón Estévez
(IFIC)
Neutrino Physics
Poster
The NEXT collaboration aims to find the neutrinoless double beta decay in Xe136. The rareness of this decay demands an exceptional background rejection. This can be obtained with an excellent energy resolution, which has been already demonstrated in the NEXT prototypes. In addition to this, the 2ß0ν decay in gas produces a characteristic topological signal which could be an extremely useful...
Dr.
Frank Zimmermann
(CERN)
Accelerator Physics and Future Colliders
Poster
Now that the masses of the Higgs and Top quark are known, circular electron-positron colliders, able to measure the properties of these particles with high accuracy, are receiving considerable attention. As part of the Future Circular Collider study at CERN, the Future e+e- Circular Collider, FCC-ee (formerly called TLEP) is a new generation collider, fitting in a 80 to 100km tunnel, and able...
Stefanos Leontsinis
Strong Interactions and Hadron Physics
Poster
We present evidence of associated vector boson+prompt J/psi production and measure its production rate. This is a key observable to further the understanding of quarkonium production mechanisms. We estimate the relative contributions to the signal from single and double parton scattering and discuss possible implications of this novel final state for study of multiple parton interact ions....
Dr.
Tomasz Jelinski
(University of Silesia)
Beyond the Standard Model
Poster
It is known that superpotential couplings between messenger sector and MSSM matter fields can significantly change phenomenology of the standard GMSB models. Those interactions not only give rise to A-terms and soft masses but also can lead to large FCNC effects. In this talk, we shall discuss examples of SO(10) unification models in which messengers couple to all generations of MSSM matter...
Jae-hyeon Park
(University of Valencia)
Beyond the Standard Model
Poster
FlexibleSUSY is a software package that takes as input a description of supersymmetric models, the MSSM and beyond, and generates a set of spectrum generator library and executables, with the aid of SARAH. The design goals are modularity, speed, and readability of the code. The high/low-scale boundary conditions are independent C++ objects that are plugged into the RGE solver together with...
124.
Generation of cosmic magnetic fields in electroweak plasma with neutrino-antineutrino asymmetry
Dr.
Maxim Dvornikov
(Institute of Physics, University of Sao Paulo)
Astroparticle Physics and Cosmology
Poster
We study the generation of strong magnetic fields in magnetars and in the early universe. For this purpose we calculate the antisymmetric contribution to the photon polarization tensor in medium consisting of electron-positron plasma and a gas of neutrinos and antineutrinos, interacting within the Standard Model. Such a contribution exactly takes into account the temperature and the chemical...
Mr.
Alexis Haesler
(University of Geneva)
Neutrino Physics
Poster
We present latest results of the measurements of hadron production with the T2K replica target in the NA61/SHINE experiment at CERN SPS. They aim to further improve the precision on the T2K neutrino flux prediction.
The current method applied in the T2K experiment to reduce uncertainties on the flux predictions is based on re-weighting of hadron cross sections in the interaction vertices....
Ms.
Debarati Roy
(Graduate student)
Strong Interactions and Hadron Physics
Poster
Event shape variables exhibit sensitivity to the structure of QCD radiation in hadron collisions. Five infrared- and collinear-safe event shape variables, each sensitive to the different features of multi-jet production, are measured using hadronic jet data collected with the CMS detector from pp collisions at $\sqrt{s}$ = 7 TeV, corresponding to a total integrated luminosity of 5 fb$^{-1}$....
Dr.
Matteo Giordano
(Universidad de Zaragoza)
Strong Interactions and Hadron Physics
Poster
We show how to obtain rising hadronic total cross sections in QCD, in the framework of the nonperturbative approach to soft high-energy scattering based on Wilson-loop correlators. Total cross sections turn out to be of "Froissart"-type, i.e., the leading energy dependence is of the form B(log s)^2, in agreement with experiments. The observed universality of the prefactor B is obtained...
Mr.
Daniel Camargo
(Ph.D Student)
Brout-Englert-Higgs physics
Poster
We present the search of the heavy Higgs into a new chiral framework, in which there are new consistent set of chiral fermions some of them with electric exotic charges, as the quarks X and Y with electric charge 5/3 and −4/3, respectively. The heavy Higgs lies into 2HDM context and interact at tree level mainly with the exotic sector due to the $Z_{4}$ symmetry.
Prospects of these Higgs...
Dr.
Michal Deak
(IFIC/CSIC)
Strong Interactions and Hadron Physics
Poster
We present the calculation of the finite part of the heavy quark impact factor at next-to-leading logarithmic accuracy in a form suitable for phenomenological studies at the LHC within the kT-factorization scheme.
Dr.
Priyotosh Bandyopadhyay
(University of Helsinki and Helsinki Institute of Physics)
Brout-Englert-Higgs physics
Poster
We will discuss the recent Higgs discovery results both by CMS and ATLAS at the LHC. In this context we will consider the status of supersymmetric scenarios. In minimal supersymmetric scenarios in order to have a $\sim 125$ GeV Higgs, one needs large quantum corrections from strong supersymmetric sectors and either large supersymmetric mass scale or large mass splitting between the...
Dr.
Christine Marquet
(CENBG/CNRS)
Neutrino Physics
Poster
The SuperNEMO double beta decay project is a modular tracker-calorimeter based experiment that will reach about 1026 years for neutrinoless double beta decay half-life corresponding to 50-100meV in terms of Majorana effective neutrino mass. It will scrutinize a hundred of kilograms of 82Se double beta decay isotope. The first module is under construction and will be installed early 2015 in the...
Mr.
Alexander Bylinkin
(ITEP)
Heavy Ion Physics
Poster
The hydrodynamic extension of the two component model for hadroproduction using recent theoretical calculations is suggested to describe the spectra of charged particles produced in heavy-ion collisions in the full range of transverse momenta, $p_T$. Data from heavy-ion collisions measured at RHIC and LHC are analyzed using the introduced approach and are combined in terms of energy density....
Rosamaria Venditti
(University and INFN, Bari)
Detector RD and Performance
Poster
The algorithm used for reconstruction and identification of hadronic tau decays by the CMS experiment at the LHC is presented. The tau reconstruction in CMS takes advantage of the particle-flow algorithm which allows to reconstruct individual hadronic decay modes. The performance of the algorithm in terms of tau ID efficiency, rate of jet -> tau, e -> tau and mu -> tau fakes and in terms of...
Dirk Duschinger
Detector RD and Performance
Poster
The offline identification algorithm employed for hadronic decays of tau leptons for the data collected in 2012 with the ATLAS detector at the LHC operating at a center-of-mass energy of 8 TeV is described. It consists of two Boosted Decision Trees including both tracking and calorimetric information to discriminate hadronically decaying tau leptons from hadronic jets and electrons. The...
Prof.
Michael Klasen
(Institute for Theoretical Physics, University of Münster)
Astroparticle Physics and Cosmology
Poster
Dark matter (DM) constitutes the only clear evidence for physics beyond the Standard Model (SM). Minimal extensions of the SM with additional scalars or fermions allow to explain the observed DM relic density in an economic way. We analyse several of these possibilities like the inert Higgs and radiative seesaw models in the light of the recent Higgs discovery and study prospects for the...
Prof.
Efrain J. Ferrer
(The University of Texas at El Paso)
Strong Interactions and Hadron Physics
Poster
The chiral symmetry breaking in an NJL-type effective model of quarks in the presence of a magnetic field is investigated. We show that new interaction tensor channels open up via Fierz identities due to the explicit breaking of the rotational symmetry by the magnetic field. We demonstrate that the magnetic catalysis of chiral symmetry breaking leads to the generation of two independent...
Matthew Wing
(UCL)
Strong Interactions and Hadron Physics
Poster
The double differential inelastic J/psi photoproduction cross section as function of the squared transverse momentum of the J/psi in bins of the inelasticity z has been measured in ep collisions with the ZEUS detector at HERA. An integrated luminosity of 468 pb-1 was used corresponding to the full data sample collected by the ZEUS experiment. The events were required to have 0.1 < z < 0.9, pt...
Dr.
Takaaki Nomura
(National Cheng-Kung University)
Astroparticle Physics and Cosmology
Poster
Weakly interacting massive particle (WIMP) as a dark matter (DM) candidate is further inspired by recent AMS-02 data, which confirm the excess of positron fraction observed earlier by PAMELA and Fermi-LAT experiments. Additionally, the excess of positron+electron flux is still significant in the measurement of Fermi-LAT. For solving the problem of massive neutrinos and observed excess of...
Dr.
Lesya Shchutska
(Univ. of Florida, United States)
Beyond the Standard Model
Poster
In this talk we discuss in detail how combinations of searches across multiple final states allow for detailed assessment of search sensitivity as a function of a wide range of branching fractions for sbottom, stop, gluino, chargino and neutralino decays to standard model particles plus a neutral LSP.
Dr.
Nameeqa Firdous
(University of Innsbruck)
Strong Interactions and Hadron Physics
Poster
Soft hadronic interactions are modeled in PYTHIA6 using phenomenological adaptation of QCD to describe non perturbative pp processes. We studied the MPI, lambda treatment, matter distribution and color reconnection models using best fit to minimum bias data published by ATLAS experiment at two center of mass energies 0.9 TeV and 7TeV.
Pyungwon Ko
(KIAS)
Astroparticle Physics and Cosmology
Poster
The correlation between the invisible Higgs decay width vs. DM direct decetion in Higgs portal DM models is usually presented in the effective field theory approach. This is fine for singlet scalar DM, but not in the singlet fermion or vector DM with Higgs portal. In this talk, I recapitulate the UV completions of the singlet fermion DM and vector DM with Higgs portal, and show that there are...
Mr.
Jaroslav Adam
(Czech Technical University in Prague)
Heavy Ion Physics
Poster
Ultra-relativistic heavy ions generate strong electromagnetic fields which
offer the possibility to study gamma-gamma, gamma-nucleus and gamma-proton
processes at the LHC in ultra-peripheral Pb-Pb and p-Pb collisions (UPC).
Exclusive photoproduction of J/psi vector mesons is sensitive to
the gluon distribution of the interacting target (proton or nucleus).
The reactions allow one to study...
Mr.
Paolo Lami
(Università degli Studi Roma Tre)
Lattice QCD
Poster
We present a lattice QCD determination of the vector and scalar form factors of the kaon semileptonic decay, which are relevant for the extraction of the CKM matrix element |V_{us}| from experimental data. Our results are based on the gauge configurations produced by the European Twisted Mass Collaboration with N_f=2+1+1 dynamical fermions, which account for the sea quark effects of the up,...
Dr.
Tommaso Chiarusi
(INFN - Sezione di Bologna)
Astroparticle Physics and Cosmology
Poster
The KM3NeT Collaboration aims at constructing a multi-km3 neutrino telescope in the Mediterranean Sea, exploiting the Cherenkov emission of relativistic charged particles in water. The detector will consist of a three-dimensional array of large-diameter pressure-resistant digital optical modules (DOMs), each equipped with 31 photomultipliers with 3" photocatode diameter. The DOMs are attached...
Dr.
Marcella Bona
(Queen Mary University of London)
Flavour Physics
Poster
We update the analysis of D meson mixing including the latest
experimental results as of January 2014. We derive constraints
on the parameters M12, Γ12 and Φ12 that describe D meson mixing
using all available data, allowing for CP violation. We also
provide posterior distributions for observable parameters
appearing in D physics.
Dr.
Marcella Bona
(Queen Mary University of London)
Flavour Physics
Poster
The vast amount of flavour physics results delivered in the last
decade by the B factories and the Tevatron have been
continuously improving our knowledge on all the B sectors allowing
for precision test of the Standard Model (SM). More results are now
flowing from the LHC experiments, in particular LHCb, now delivering
unprecedented insight and new evidences of rare decays.
The CKM...
LUIS SERRA DIAZ CANO
(IFIC)
Neutrino Physics
Poster
In this poster we present the latest results of NEXT-DEMO, a 1:4.5 scale prototype of the NEXT100 detector, a high-pressure xenon gas TPC that will search for the neutrinoless double beta decay of Xe-136.
X-ray energy depositions produced by the de-excitation of Xenon atoms after the interaction of gamma rays from radioactive sources have been used to characterize the response of the...
Dr.
Valery Lyuboshitz
(Joint Institute for Nuclear Research ( Dubna ))
Neutrino Physics
Poster
The lepton-charge ( $L_e,\,L_{\mu},\,L_{\tau}$ )
nonconserving
interaction leads to the mixing of the electron, muon and
tau neutrinos, which manifests itself in spatial oscillations
of a neutrino beam, and also to the mixing of the electron,
negative muon and tau lepton, which, in particular, may be
the cause of the "forbidden" radiative decay of the negative
muon into...
Dr.
Darius Jurciukonis
(Vilnius University Institute of Theoretical Physics and Astronomy)
Neutrino Physics
Poster
Neutrino oscillation experiments showed that neutrinos have tiny but non-zero masses. The seesaw mechanism is the most fruitful explanation of the light neutrino masses and mixings, which connects the tiny neutrino masses with heavy right-handed neutrino masses. After spontaneous symmetry breaking of the
Standard Model gauge group one obtains a $(n_L+n_R)\times(n_L+n_R)$
Majorana mass matrix...
Prof.
Minaketan Parida
(Centre of Excellence in Theoretical and Mathematical Sciences, SOA University, Bhubaneswar 751030)
Neutrino Physics
Poster
Prediction of low-mass W_R and Z_R gauge bosons in popular grand unified theories has been the subject of considerable attention over the last three decades. In this work we discuss two different ways towards achieving this objective with minimal symmetry breaking chains of SO(10) or E_6 grand unified theories in concordance with light neutrino masses. Model predictions for observable lepton...
Dr.
SALIM CERCI
(ADIYAMAN UNIVERSITY)
Strong Interactions and Hadron Physics
Poster
We present recent measurements of inclusive jet cross sections at low-pT and forward rapidity. The data is collected with the CMS detector using p-p collisions at 8 TeV, exploiting special low-pileup runs of the LHC. The results are compared to theoretical predictions, and to CMS measurements at high-pT and central rapidity.
Hwi Dong Yoo
Detector RD and Performance
Poster
During the first three years of data taking at the LHC, considerable advances in understanding and controlling systematic effects in luminosity determination were made both by the experiments and by the accelerator. The precision achieved with the CMS experiment is 2.6% for the pp data taking in 2012 at 8 TeV. This is an unprecedented precision at a hadron collider, comparable in size with the...
Dr.
Natasha Sharma
(Institute of Physics (IN))
Heavy Ion Physics
Poster
The extremely high center-of-mass collision energies at the Large Hadron Collider (LHC) are expected to produce significant yields of light (hyper-)nuclei in proton-proton, proton-lead, and especially in lead-lead collisions. In addition, these collisions give one the possibility to search and study light exotic states.
The use of the Time Projection Chamber and the Time-Of-Flight detector...
Dr.
Ho Yin Ngai
(The University of Hong Kong)
Neutrino Physics
Poster
Muon-induced neutrons are one of the major backgrounds to various underground experiments, such as dark matter searches, low-energy neutrino oscillation experiments and neutrino-less double beta-decay experiments. Previous experiments on the underground production rate of muon-induced neutrons were mostly carried out either at shallow sites or at very deep sites. The Aberdeen Tunnel experiment...
Prof.
et al. D0 Collaboration
(Fermi National Accelerator Laboratory)
Flavour Physics
Poster
We present two recent measurements of direct CP-violation parameters in charm meson decay, using 10.4 fb-1 of proton-antiproton collisions collected by the D0 detector during Run II at the Fermilab Tevatron Collider. We extract the asymmetry in decay widths for the positively and negatively charged cases of D_s -> phi pi (with phi -> K+K-) and $D -> K pi pi. In both cases, we determine the raw...
Dr.
Don Lincoln
(Fermilab)
Strong Interactions and Hadron Physics
Poster
We present the first measurement of the cross section for direct photon pair production in association with dijet events in proton-antiproton collisions at sqrt(s)=1.96 TeV. We also determine the fraction of events with hard double parton (DP) scattering in a single proton-antiproton collision. Aside from the stringent test of the perturbative QCD predictions, diphoton + dijet production...
Stefan Schmitt
(DESY)
Astroparticle Physics and Cosmology
Poster
Measurements of normalised cross sections for the production of photons and neutrons at very small angles with respect to the proton beam direction in deep-inelastic ep scattering at HERA are presented as a function of the Feynman variable x_F and of the centre-of-mass energy of the virtual photon-proton system W. The data are taken with the H1 detector in the years 2006 and 2007 and...
Jonathan Lewis
(Fermilab)
Strong Interactions and Hadron Physics
Poster
CDF has performed a measurement of the B_c production cross section times branching fraction for B_c -> J/psi mu^+ nu relative to the B+ production cross section times branching fraction for B+ -> J/psi K^+. The measurement is based on the complete CDF Run II data set consisting of an integrated luminosity of 8.7 fb^-1. A sample of 1370 events is selected in which a J/psi decay to two muons is...
Matthew Wing
(UCL)
Strong Interactions and Hadron Physics
Poster
The exclusive deep inelastic electroproduction of $\psi(2S)\rightarrow \mu^+\mu^-$, $\psi(2S)\rightarrow J/\psi\pi^+\pi^-\rightarrow \mu^+\mu^-\pi^+\pi^-$ and $J/\psi\rightarrow \mu^+\mu^-$ have been studied with the ZEUS detector at HERA using an integrated luminosity of $354$ pb$^{-1}$. The analysis was carried out in the kinematic range $5 < Q^2 < 70$ GeV$^2$, $30 < W < 210$ GeV and $|t|...
Mr.
José Ignacio Crespo Anadón
(CIEMAT)
Neutrino Physics
Poster
Double Chooz is a 2-detector reactor antineutrino oscillation experiment designed to make a precision measurement of the neutrino mixing angle $\theta_{13}$. The electron antineutrinos from the Chooz (France) nuclear power plant are detected through the inverse beta decay process $\bar{\nu}_{e} + p \to e^{+} + n$ in a gadolinium-loaded liquid scintillator target. In the 1-detector run, started...
Dr.
Jan Strube
(Tohoku University)
Brout-Englert-Higgs physics
Poster
At center of mass energies of 500 GeV and above, e+e- collisions lead to processes in which the Higgs boson is radiated from top quarks and antiquarks and events in which two Higgs bosons are produced. The first of these processes leads to a precision measurement of the Higgs boson coupling to top quarks, the second to a measurement of the Higgs boson self-coupling. The rates of these...
Dr.
Andrea Gabrielli
(Universita e INFN, Roma I (Italy))
Brout-Englert-Higgs physics
Poster
This poster presents an updated measurement of the Higgs boson mass with the combined fit of two decay channels H→ZZ*→4l and H → γγ . The analyses are based on 4.6 fb-1 and 20.7 fb-1 of proton-proton collisions at centre of mass energies of 7 TeV and 8 TeV respectively, recorded with the ATLAS detector at the LHC. This result is based on updated energy-scale calibrations for photons,...
Mr.
Heiner Tholen
(University of Hamburg)
Top-quark and ElectroWeak Physics
Poster
The production cross section of top-quark pairs associated with a photon (ttbar+gamma) is determined in the muon+jets decay channel using 19.7 fb-1 of data taken at sqrt(s) = 8 TeV with the CMS detector. The relative fraction of ttbar+gamma events normalized to inclusive ttbar production is measured. Using an inclusive CMS cross section measurement, the ttbar+gamma cross section is determined...
Dr.
Vladimir Druzhinin
(Novosibirsk State University)
Strong Interactions and Hadron Physics
Poster
We have used ISR technique to measure the proton magnetic form factor in the energy region from 3.0 to 6.5 GeV and charged kaon form factor in the range from 2.6 to 7.5 GeV. The proton data clearly indicate that the difference between values of time- and space-like magnetic form factors decreases with increase of energy. The kaon form factor decreases with energy faster than 1/E^2 approaching...
Dr.
Sebastian Mergelmeyer
(Universitaet Bonn (Germany))
Top-quark and ElectroWeak Physics
Poster
Single top quark production accounts for ~1/3 of the overall top quark production cross-section at the LHC, opening a great opportunity to probe electroweak couplings. One important production mode in the Standard Model is the creation of a single top quark in association with a W boson, which had eluded discovery until summer 2013. The close similarity of its final state to that of top quark...
Dr.
Sangeun Lee
(Kyungpook University, Korea, Republic Of)
Strong Interactions and Hadron Physics
Poster
A measurement is presented of the Z boson production differential cross section as a function of Z transverse momentum. The sample of proton-proton collisions collected by the CMS experiment at the LHC at $\sqrt{s}$ = 8 TeV corresponds to an integrated luminosity of $18.4~\pm 0.5$~\pbinv. The Z bosons are identified via their decay to do-lepton pairs. The measured cross sections are well...
Dr.
Eric Feng
(Argonne National Laboratory (United States))
Brout-Englert-Higgs physics
Poster
The couplings of the Higgs boson are measured by the ATLAS experiment using the LHC Run I data sample. The data analyzed involve decays of the Higgs boson to pairs of photons, Z bosons, W bosons, tau leptons, or b-quarks. Evidence for Higgs boson decays into fermion pairs is found with 3.7 significance using the combination of the bb and tau-tau channels. The measured values and mass...
Mr.
Rocky So
(University of British Columbia)
Strong Interactions and Hadron Physics
Poster
We present a set of final results on invariant mass spectra of tau lepton decays into three hadrons and a neutrino. The results are based on the analysis of about 315 million tau lepton pairs, corresponding to an integrated luminosity of 342 fb^-1, collected with the BABAR detector at the PEP-II asymmetric energy e+e- storage rings.
Dr.
Paolo Iengo
(CERN)
Strong Interactions and Hadron Physics
Poster
Understanding of the production of P-wave charmonium states is a significant bottleneck in the understanding of charmonium production as a whole. Current theoretical calculations are limited in their ability to model the production and decay of these states. We present new measurements of the double-differential production cross-sections of the three chi_cJ spin states separately, extending...
Ms.
Shivali Malhotra
(University of Delhi)
Brout-Englert-Higgs physics
Poster
After the announcement of a 125 GeV particle by the ATLAS and CMS collaborations on July 04, 2012, it became very important to study all the properties of this new particle (Higgs Boson). Measurements of the properties of the Higgs boson with a mass near 125 GeV will be presented. The results are based on data samples corresponding to integrated luminosities of up to 5.1/fb at 7 TeV and up to...
Prof.
Alexandert Studenikin
(Moscow State University and JINR-Dubna)
Astroparticle Physics and Cosmology
Poster
New exact solutions of the modified Dirac equation describing a neutrino with nontrivial electromagnetic properties in extreme background conditions are obtained. Within the quasi-classical treatment the effective Lorentz force that describes the neutrino propagation in the magnetized rotating matter is introduced. We predict the effect of the spatial separation of different types of...
Miguel Ardid
(Universitat Politècnica de València)
Astroparticle Physics and Cosmology
Poster
The MOSCAB experiment (Materia OSCura A Bolle) uses the Geyser technique for dark matter search. The results of the first 0.5 kg mass prototype detector using superheated C3F8 liquid were very encouraging, achieving a 5 keV nuclear recoil threshold with high insensitivity to gamma radiation. Additionally, the technique seems to be easily scalable to higher masses for both in terms of...
Adrian Perieanu
Detector RD and Performance
Poster
The Laser Alignment System (LAS) of the CMS Tracker detector monitors the position variation of its components every five minutes. A precision of 1 micrometer for the x and y translations, and 1.1 microradians rotation around z-axis was achieved. For rotations around x- and y-axis the achieved precision is 3.7 and 2.6 microradians, respectively.
During the cooling down test performed in...
Christoffer Petersson
(ULB, Brussels)
Beyond the Standard Model
Poster
Motivated by the absence of any clear signal of physics beyond the Standard Model (SM) at the LHC after Run 1, I will discuss one slight (but tantalizing) hint of new physics and one non-minimal extension of the SM. In the first part of the talk I will do the exercise of explaining a small excess of multilepton events recently observed by the CMS collaboration by means of a simplified model of...
Mr.
XIAONAN LI
(IHEP)
Neutrino Physics
Poster
Jiangmen Underground Neutrino Observatory (JUNO), with 53 km baseline, 700 meter overburden, will aim at measurement of neutrino mass hierarchy as well as many other physical goals. Based on the geological survey, muon flux in the underground hall was estimated to be about 0.003 Hz/m2. Muon induced background was discussed. In addition, the underground facility was described in the detail.
Giacomo Artoni
Detector RD and Performance
Poster
The ATLAS experiment identifies and reconstructs muons with two high-precision tracking systems, the Inner Detector and the Muon Spectrometer, which provide independent measurements of the muon momentum. This poster summarizes the performance of the combined muon reconstruction in terms of reconstruction efficiency, momentum scale and resolution. Data-driven techniques are used to derive...
Ilse Kratschmer
Detector RD and Performance
Poster
The performance of muon reconstruction and identification in CMS has been studied on data collected in pp collisions at √s = 7 TeV and 8 TeV at the LHC. We present measurements of muon reconstruction and trigger efficiencies, fake rates, and momentum scale and resolution, and discuss methods developed to differentiate prompt isolated muons from decays of heavy particles (W/Z/H boson or top...
Piet Verwilligen
Detector RD and Performance
Poster
The trigger systems of LHC detectors play a fundamental role in defining the physics capabilities of the experiments. A reduction of several orders of magnitude in the rate of collected events, with respect to the proton-proton bunch crossing rate generated by the LHC, is mandatory to cope with the limits imposed by the readout and storage systems limits. An accurate and efficient online...
Dr.
Fredy Ochoa
(Universidad Nacional de Colombia)
Top-quark and ElectroWeak Physics
Poster
In the standard model, the fermion masses are provided by Yukawa interactions consistent with the gauge symmetry and with the inclusion of only one scalar doublet. However, the mass spectrum of the quarks exhibit very different mass values, which require unnatural large tuning of the Yulawa parameters without any apparent fundamental reason. In this work we propose a new nonuniversal U(1)´...
Prof.
Alexander Studenikin
(Moscow State University and JINR-Dubna)
Neutrino Physics
Poster
A possibility for a neutrino to be an electrically millicharged particle is one of the presently discussed manifestation of physics beyond the Standard Model. Using the new limit on the neutrino anomalous magnetic moment recently obtained by the GEMMA experiment on measurements of the cross section for the reactor antineutrino scattering on free electrons, we get a new direct upper bound on...
Prof.
Alexander Studenikin
(Moscow State University and JINR-Dubna)
Astroparticle Physics and Cosmology
Poster
We propose and investigated a new mechanism of electromagnetic radiation that can be emitted by electrons when they are dipped in dense fluxes of relativistic neutrinos. These studies are based on the obtained exact solution for the electron wave function in presence of relativistic neutrino background. The energy spectrum, rate and power of this radiation are calculated and applications to...
Dr.
Pau Novella
(APC/CNRS)
Neutrino Physics
Poster
We present a new measurement of the neutrino oscillation parameter $\sin^22\theta_{13}$ derived from two years of data taken with the Double Chooz far detector. This result, drawn from twice the data used in our previous Gadolinium-based analysis, is the most precise Double Chooz measurement to date. Along with increased statistics, the analysis features an improved energy scale, reduced...
Dr.
Gennady Kozlov
(JINR)
Heavy Ion Physics
Poster
The critical phenomena are studied in the frame of an effective theory of strong interactions at high temperatures. The critical end point (CEP) is a distinct singular feature existence of which is dictated by the appropriate dynamics. The physical approach of the effective CEP is studied via the influence fluctu- ations of two-body Bose-Einstein correlations for observed particles to which...
Ms.
Alma Rojas
(IFIC, Universidad de Valencia)
Neutrino Physics
Poster
After the experimental confirmation of the non-zero value of $\theta_{13}$, the most useful ansatz for the lepton mixing matrix, the tribimaximal (TBM) mixing matrix, requires deviations coming possibly from the charged lepton sector to take into account the non-zero value of this mixing angle.
Then, assuming that the neutrino mixing matrix is diagonalized by the TBM, i.e. $U_{\nu}=U_{TBM}$,...
Prof.
Luc Marleau
(Université Laval)
Strong Interactions and Hadron Physics
Poster
The Skyrme Model is low-energy QCD effective field theory from which baryons (and nuclei) emerge as topological solitons. Despite it provides a rather successful description of the nucleons, it overestimates the binding energies in nuclei by at least an order of magnitude. On the other hand Skyrme-like models that nearly saturate the Bogomol'nyi bound seem to provide to a better picture of...
Mr.
Alessandro Minotti
(IPHC - Université de Strasbourg)
Neutrino Physics
Poster
The Double Chooz experiment measures the neutrino mixing angle θ13 by detecting the reactor electron anti-ν via inverse beta decay. The positron-neutron delayed coincidence yields a sizeable background suppression; a further contribution might come from the development of techniques for an efficient identification of positrons. Pulse shape discrimination, a well-established technique for...
Dr.
Valery Lyuboshitz
(Joint Institute for Nuclear Research ( Dubna ))
Strong Interactions and Hadron Physics
Poster
The coherent inelastic processes of the type $a --> b$, which
may take place in the interaction of hadrons and $\gamma$ quanta with
nuclei at very high energies (the nucleus remains the same), are
theoretically investigated. For taking into account the influence of
matter inside the nucleus, the optical model, based on the conception of the refraction index, is used .
Analytical formulas...
Dr.
Valery Lyuboshitz
(Joint Institute for Nuclear Research ( Dubna ))
Heavy Ion Physics
Poster
The phenomenological structure of inclusive cross-sections of the
production of two neutral $K$ mesons in hadron--hadron, hadron--nucleus and nucleus--nucleus collisions is theoretically
investigated taking into account the strangeness conservation in strong and electromagnetic
interactions. Relations describing the dependence
of the correlations of two short-lived and two long-lived...
Mr.
Rafael Delgado López
(Dep. Física Teórica I, Universidad Complutense de Madrid (UCM))
Beyond the Standard Model
Poster
Recently, a new boson has been discovered at LHC which, so far, fits the properties of the SM
Higgs boson. This would make the SM unitary. However, the SM is not the more general
low-energy dynamics for the minimal electroweak symmetry breaking sector with three Goldstone
bosons and one light scalar.
By using the more general low energy effective Lagrangian for these four...
Dr.
Silvestro Di Luise
(ETH Zurich)
Neutrino Physics
Poster
We present an optimization of the neutrino beam which could be produced at CERN and aimed to the newly
proposed deep-underground neutrino observatory LAGUNA-LBNO.
The main goals of LAGUNA-LBNO, a next-generation long-baseline neutrino and antineutrino oscillation
experiment, are to discover CP-violation in the leptonic sector (CPV)
and determine the neutrino mass hierarchy.
In...
Mr.
Jannik Hofestädt
(ECAP)
Neutrino Physics
Poster
Since the measurement of the neutrino mixing parameter theta_13, the determination of the neutrino mass hierarchy has become a central goal of upcoming neutrino physics experiments. A promising pathway to this measurement are atmospheric neutrino experiments probing neutrino oscillation in matter.
We present the status of a dedicated feasibility study 'Oscillation Research with Cosmics in the...
Alain Blondel
(UNIGE)
Accelerator Physics and Future Colliders
Poster
As part of the Future Circular Collider study at CERN, the Future e+e- Circular Collider, FCC-ee, (formerly called TLEP) is a new generation collider, able to fit in a 80 to 100km tunnel, and able to deliver high luminosity in up to four interaction points from at least the Z peak to above the top pair threshold. The luminosity at the Z pole, W pair and top threshold are over 2.5, 1.2 10^35...
Prof.
Alexander SORIN
(Joint Institute for Nuclear Research, Dubna)
Heavy Ion Physics
Poster
Experimental manifestation of P-odd effects related to the vorticity and hydrodynamic helicity in non-central heavy ion collisions at MPD@NICA and BM@N detectors is discussed. For the NICA and FAIR energy range characterised by the large baryonic charge of the forming medium the effect should manifest itself in the specific neutron asymmetries. The polarization of strange particles probing the...
Prof.
Deog-Ki Hong
(Pusan National University)
Flavour Physics
Poster
We propose a new method, using the Andreev reflection at superconductors, to measure parity violation induced by the standard electroweak theory, which in turn constrain the possible parity-violating effect of new physics. The weak neutral currents induce parity-violating, marginal effective operators, though quite tiny, in superconductors. We estimate their effects on supercon- ducting gaps...
Mr.
Tamas Almos Vami
(Wigner Research Centre for Physics)
Education and Outreach
Poster
In recent years various educational activities have been pursued in Hungary with the aim to raise the interest of high school students in natural sciences, and especially in physics. Our poster will present some of the key projects of broader interest for the scientific community:
Hungarian Teachers Programme: In 2006 we organized the first National Teachers Programme at CERN which since...
James Lacey
Detector RD and Performance
Poster
ATLAS has implemented and commissioned many new jet substructure techniques to aid in the identification and interpretation of hadronic final states originating from Lorentz-boosted heavy particles produced at the LHC.
These techniques include quantum jets, jet charge, jet shapes, quark/gluon, boosted boson and top quark tagging, along with grooming methods such as pruning, trimming, and...
Mr.
Saranya Ghosh
(Tata Institute of Fundamental Research (TIFR), Mumbai)
Detector RD and Performance
Poster
Advanced missing transverse momentum reconstruction algorithms have been developed by CMS to mitigate the effect of pileup. The performance of different missing transverse momentum reconstruction algorithms is compared in pp collision data recorded at a center-of-mass energy of $\sqrt{s} = 8$~TeV, corresponding to an integrated luminosity of $19.6$~fb$^{−1}$. Further algorithms have been...
Dimitrios Kyriazopoulos
Detector RD and Performance
Poster
This talk presents the muon reconstruction algorithms used in ATLAS during the LHC run-1 and their performances in terms of efficiency, muon momentum scale and resolution. These performances have been measured using large calibration samples of $J/\psi$, $\Upsilon$ and $Z$ decays, which allow to control the systematic uncertainties on efficiency and on momentum scale at the per-mille level....
Nicolas-Gilberto Gutierrez-Ortiz
Detector RD and Performance
Poster
This poster describes the performance of the shower deconstruction algorithm, a jet tagging algorithm, using proton-proton collisions at a centre of mass energy of sqrt{s} = 8 TeV. Data recorded with the ATLAS detector corresponding to an integrated luminosity of 14.2 f-1 are considered. Using small-radius jets to probe the substructure of a large-radius jet, shower deconstruction assigns a...
Dr.
Mikhail Barabanov
(Joint Institute for Nuclear Research)
Strong Interactions and Hadron Physics
Poster
The study of strong interactions and hadron matter in the process of antiproton-proton annihilation seems to be a challenge nowadays. The research of charmonium cc\bar, charmed hybrid cc\bar g and tetraquark (cq(cq\prime)\bar, q and q\prime = u, d, s) spectra and their main characteristics (mass, width, branching ratio) in experiments using high quality antiproton beam with momentum up to 15...
Dr.
Grigorios Chachamis
(IFIC (CSIC-UV))
Strong Interactions and Hadron Physics
Poster
We will review our recent studies on a number of BFKL related
projects in QCD and N = 4 SYM by using advanced Monte Carlo techniques.
We will discuss the new setup of our code as a Monte
Carlo tool that produces theoretical predictions ready to be directly
compared against experimental data in order to perform a number of
important phenomenological studies at the LHC
Raffaella Radogna
(University & INFN Bari)
Detector RD and Performance
Poster
The CMS collaboration considers upgrading the muon forward region with Gas Electron Multiplier (GEM) chambers, which are able to handle the extreme particle rates expected in this region along with a high spatial resolution. This allows to combine tracking and triggering capabilities, resulting in a lower trigger threshold along with improved muon identification and the track reconstruction....
Prof.
Sanjib Kumar Agarwalla
(Institute of Physics, Bhubaneswar, India)
Neutrino Physics
Poster
The upcoming Iron Calorimeter (ICAL) detector at the India-based Neutrino Observatory (INO) cavern aims to explore the Earth's matter effect by observing the energy and zenith angle dependence of the atmospheric neutrinos in the multi-GeV range. Due to its charge identification capability using a magnetic filed, the ICAL detector can study neutrino and anti-neutrino events separately. The...
Blazenka Melic
(Rudjer Boskovic Institute, Zagreb)
Astroparticle Physics and Cosmology
Poster
We study the scenario where dark matter corresponds to a set of pseudo-Goldstone bosons, that we call dark pions, generated by the spontaneous breaking of a symmetry in the dark sector, and show that one can accommodate studied experimental and theoretical constraints in wide regions of parameter space.
Dr.
MASAYA HASEGAWA
(KEK)
Astroparticle Physics and Cosmology
Poster
POLARBEAR-2 (PB-2) is a new receiver system that will be deployed
on the Simons Array telescope platform in early 2015 alongside the
current observing POLARBEAR-1 receiver for Cosmic Microwave
Background (CMB) polarization measurements. The science goals
of PB-2 are to characterize the B-mode (curl component)
signal both at large and small angular scales with unprecedented...
Ms.
DALJEET KAUR
(University of Delhi)
Neutrino Physics
Poster
To study the properties of elusive atmospheric neutrinos, the India-based Neutrino Observatory (INO) has been planned to be set up at Theni (Tamil Nadu), South India. INO will host a 50 ktons magnetized Iron CALorimeter (ICAL) detector for the determination of neutrino mass and mixing parameters which is one of the important issues for the leptonic sector in today’s particle physics. The...
Dr.
Jenny List
(DESY)
Beyond the Standard Model
Poster
While the current 7/8 TeV results form the LHC excludes highly constrained SUSY models with a light sparticle spectrum, less constrained models are still viable. Certain such models promise both discovery of coloured sparticles during the 14 TeV run of the LHC, and a rich spectrum of non-coloured states, accessible at the ILC. LHC might or might not give a hint to the existence of these...
Dr.
Vicent Mateu
(University of Vienna)
Top-quark and ElectroWeak Physics
Poster
We present results for the production of primary heavy quarks in final state jets, as well as secondary radiation of heavy quark pairs related to gluon splitting. We focus in the thrust and C-parameter distributions for e+e- collisions. The results are given in the dijet limit where the hard interaction scale and the scales related to collinear and soft radiation are widely separated. In this...
Dr.
Mojtaba Mohammadi Najafabadi
(IPM)
Brout-Englert-Higgs physics
Poster
We study the anomalous production of a single top quark in association with a Higgs boson at the LHC originating from flavor changing neutral current (FCNC) interactions in tqg and tqH vertices. We derive the discovery potentials and 68% C.L. upper limits considering leptonic decay of the top quark and the Higgs boson decay into a bb¯ pair with 10 fb−1 integrated luminosity of data in...
Dr.
Yanping Huang
(DESY)
Brout-Englert-Higgs physics
Poster
The discovery of a particle consistent with a Higgs Boson is a great success for the LHC Physics Program. Using the full 25 fb Run I dataset, ATLAS has established a clear excess of signal over background in the di-photon channel alone. In this poster, we will present properties measurements of the new particle in the H->gamma gamma analysis which relies on a new calibration of photon energy...
Uta Klein
(University of Liverpool)
Brout-Englert-Higgs physics
Poster
The LHeC is a proposed facility at CERN that will provide ep collisions with centre-of-mass energies above 1 TeV and a high luminosity of $O($ab$?1)$. This facility will provide a unique opportunity to study the $WW\to H$ and $ZZ\to H$ production modes. Several decay channels - such as $H\to b \bar b$, $H\to c \bar c$ and $H \to \tau^+ \tau^-$ - that are difficult to study precisely at the LHC...
Mrs.
Shahla Khalilova
(PhD student)
Heavy Ion Physics
Poster
We discuss new results connected with more detail structure of the pseudorapidity spectra of charged relativistic particles with β > 0.7 produced in Si (at energy 4 A GeV and 14 A GeV), Au (at energy 11.6 A GeV) and Pb+Em (at energy 158 A GeV) reactions. The relativistic nucleus beams were obtained from AGS and SPS machines. The pseudorapidity spectra were analyzed using Maximum Entropy...
Prof.
Ivanka Bozovic Jelisavcic
(Vinca Institute of Nuclear Sciences)
Detector RD and Performance
Poster
The very forward region of the detector at a future linear collider will be instrumented with two sampling calorimeters - BeamCal and LumiCal - for fast beam parameter estimates, precise luminosity measurements, as well as for the improvement of the hermeticity of the detector at small angles. These very forward calorimeters are designed to sustain high radiation doses and deliver precise and...
Mr.
José Mariano López
(CIEMAT)
Neutrino Physics
Poster
The purpose of Double-Chooz reactor neutrino experiment is a precision measurement of the mixing angle theta13. A crucial item of this analysis is the thorough investigation of the different backgrounds found in the detector: neutrino coincidence signals are imitated by accidental coincidences of single events and by correlated events induced by cosmic muons, including stopped muons, fast...
Dr.
Oscar Alonso
(Universitat de Barcelona)
Detector RD and Performance
Poster
Si-strips are the baseline for the forward tracker detector (FTD) of the International Linear Detector (ILD). The main element of the front-end (FE) electronics is a multi-channel System-on-Chip (SoC) for self-triggered detection and processing of low level charge signals. The architecture used in this chip is very similar to the typical structure of a silicon strip readout system presented in...
Daniele Madaffari
(CPPM, Aix-Marseille Université, CNRS/IN2P3 (FR))
Detector RD and Performance
Poster
In high-energy physics experiments on hadron colliders, online selection is crucial to reject most uninteresting collisions. In particular, the ATLAS experiment includes b-jet selections in its trigger strategy, in order to select final states with heavy-flavor content and enlarge its physics potentials.
Dedicated selections are developed to quickly identify fully hadronic final states...
Dr.
Grzegorz Stefanek
(Jan Kochanowski University in Kielce)
Heavy Ion Physics
Poster
The exploration of the phase diagram of strongly interacting matter
particularly the search for a critical endpoint, is one of the most
challenging tasks in present heavy ion physics. The existence of
the critical point is expected to result in large event-by-event
fluctuations of many observables of produced particles, provided
the freeze-out occurs close to its location in the...
Leila Haegel
(U. of Geneva)
Neutrino Physics
Poster
The T2K near detector complex, ND280, is located at the JPARC accelerator facility in Tokai, Japan, 280 meters downstream from the target. This poster will summarize recent physics results from ND280.
William Trischuk
(University of Toronto)
Detector RD and Performance
Poster
Progress in experimental particle physics in the coming decade depends crucially upon the ability to carry out experiments at high energies and high luminosities. These two conditions imply that future experiments will take place in very high radiation areas. In order to perform these complex and perhaps expensive experiments new radiation hard technologies will have to be developed. Chemical...
Dr.
Varun SHARMA
(Univ. of Delhi, India)
Beyond the Standard Model
Poster
This poster presents a search for excited quarks (q*) decaying into a γ + jet final state at √s = 8 TeV with the CMS experiment, using the dataset corresponding to an integrated luminosity of 19.7 fb−1 collected during 2012 data taking at the LHC. Photons and jets with high transverse momentum are selected to search for a resonance peak in the γ + jet invariant mass distribution. The 95%...
Dr.
Theopisti Dafni
(Universidad de Zaragoza)
Neutrino Physics
Poster
The “Neutrino Experiment with a Xenon TPC” (NEXT) is intended to investigate the neutrinoless double beta decay using a high-pressure xenon gas TPC filled with Xe enriched in 136Xe and therefore demands extremely low background levels. An extensive screening and material selection process is underway for several years to help in the design of the set-up and in the construction of the...
Ms.
Cristiana Principato
(Fermilab)
Brout-Englert-Higgs physics
Poster
A direct search at CDF for an exotic Higgs boson that decays to invisible particles is reported. The simplest H-->invisible Standard Model (SM) process has a branching ratio of 10^-3. However, Higgs boson decays to invisible particles can be significantly enhanced in many BSM models. One of the cleanest signatures in searching for this process is when the Higgs boson is produced in...
Anthony Hawkins
Beyond the Standard Model
Poster
An inclusive search for non-Standard Model production of two prompt, isolated leptons with the same electric charge and an application to a doubly charged Higgs boson search are presented. The search is performed in a data sample corresponding to 20.3 fb−1 of integrated luminosity collected in 2012 at √s = 8 TeV by the ATLAS detector at the LHC.
Same-sign lepton pairs (ee, eμ, and μμ) are...
Dr.
Reza Goldouzian
(IPM (Iran))
Top-quark and ElectroWeak Physics
Poster
A search for single top quark production through flavor-changing neutral current in the anomalous tqγ vertex is performed in proton-proton collisions at the center-of-mass energy of 8 TeV. The analysis is based on a dataset corresponding to an integrated luminosity of 19.1 fb−1 collected with the CMS detector. The search is performed on events with one isolated muon and jets in the final...
Mr.
Jan-Frederik Schulte
(I. Physikalisches Intitut B RWTH Aachen University)
Beyond the Standard Model
Poster
Multilepton final states provide for a variety of opportunities to search for beyond the standard model physics with low backgrounds. We summarize searches with 2,3,4, and more leptons, with and without MET, b-tags, or large amount of hadronic energy.
Amelia Jean Brenan
Beyond the Standard Model
Poster
A search is presented for production of dark matter particles recoiling against a leptonically decaying Z boson in 20.3 fb−1 of pp collisions at √s = 8 TeV with the ATLAS detector at the Large Hadron Collider. Events with large missing transverse momentum and two oppositely-charged electrons or muons consistent with the decay of a Z boson are analyzed. No excess above the Standard Model...
Prof.
David Hitlin
(Caltech)
Beyond the Standard Model
Poster
A new class of dark matter theories introducing a dark sector charged under a new force has recently been proposed.
The corresponding gauge boson, the so-called dark photon (A′), has MeV−GeV mass and couples to the Standard Model through its kinetic mixing with the photon.
We present a search for a dark photon in e+e− -> gamma A′, A′ -> e+e−, μ+μ− at BABAR. We do not observe a...
Yiming Abulaiti
Beyond the Standard Model
Poster
Motivated by natural SUSY, a search for supersymmetric top squark pair production in final states with one isolated lepton, jets and missing transverse momentum in sqrt(s) = 8 TeV pp collisions using 20.3 fb-1 of data from the ATLAS experiment, is presented. The analysis targets five different decay scenarios for the supersymmetric top squark (stop) : (1) stop decays into a top quark and the...
Janet Dietrich
Beyond the Standard Model
Poster
Many supersymmetry models feature charginos, neutralinos and also sleptons with masses less than a few hundred GeV. These can give rise to direct pair production rates at the LHC that can be observed in the data sample recorded by the ATLAS detector. The talk presents results from searches for charginos, neutralinos and slepton production in final state events characterized by the presence of...
Mr.
Simon Fink
(Karlsruhe Institute of Technology)
Brout-Englert-Higgs physics
Poster
The production of a Higgs boson in association with a single top quark is one of a few channels which are sensitive for not yet excluded anomalous couplings of the Higgs boson to fermions. Multivariate analysis tools are used for the reconstruction and classification of signal events, where the Higgs boson decays into bottom quarks and the single top quark decays leptonically. In this talk the...
Ms.
Chiu-Ping Chang
(Department of Physics, National Central University, Taiwan)
Brout-Englert-Higgs physics
Poster
The most recent CMS results on the search for the Standard Model Higgs boson in Zgamma and gamma*gamma channel, using the dataset recorded at the LHC from pp collisions at centre of mass energies of 7 and 8 TeV, will be presented. New physics models that predict a large enhancement of these branching ratios can be excluded.
Dr.
Angelo De Souza Santos
(Universidade Estadual Paulista (UNESP), Brazil)
Beyond the Standard Model
Poster
The search for heavy resonances at CMS involving bosons are presented. These final states include diphoton, VV, VH, and HH resonances.
Dr.
Zuzana Barnovska
(Centre National de la Recherche Scientifique (France))
Brout-Englert-Higgs physics
Poster
The search for a narrow resonance decaying into two photons in the mass range [65-600] GeV in pp collisions with the ATLAS detector at the Large Hadron Collider is presented. The results are given as a model independent limit on the fiducial production cross-section times branching fraction of X->gamma-gamma.
Jonathan Lewis
(Fermilab)
Beyond the Standard Model
Poster
We report the results of a direct search for Dirac magnetic monopoles using the CDF Run II detector at Fermilab. Monopoles within this model are produced via a mechanism similar to Drell-Yan pair production, are highly ionizing, and experience magnetic forces
parallel to the magnetic field. We employ a dedicated trigger, which requires large light pulses in the scintillators of the...
Santiago Folgueras
(Universidad de Oviedo)
Beyond the Standard Model
Poster
Although same sign dileptons final states are very rare in the SM context, they appear naturally in many different new physics scenarios such as SUSY where two same-sign dileptons can be produced in the decay chain of supersymetric particles.
Different scenarios can be presented: Same-sign dileptons accompanied by b-quarks can arise from SUSY processes where 3rd generation quark...
Dr.
Akimasa Ishikawa
(Tohoku University)
Beyond the Standard Model
Poster
We present the measurements of electroweak penguin decays of $B$ and $B_s$ mesons, which are sensitve to New Physics. We have measured the forward-backward asymmetry in $B \to X_s \ell^+ \ell^-$ using a semi-inclusive reconstruction technique. We also report the differential branching fraction, isospin asymmetry, $K^{*}$~polarization, and forward-backward asymmetry of the exclusive $B \to...
Tracey Sharon Berry
Beyond the Standard Model
Poster
A search, performed using the ATLAS experimental data, is conducted for non-resonant new phenomena in the dilepton final state, which could originate from contact interactions and large extra spatial dimensions. The full LHC 2012 proton-proton dataset is used comprising 20 fb−1 at √s = 8 TeV, recorded by the ATLAS detector under nominal conditions. For the first time in ATLAS, the...
Dr.
Giuseppe Fasanella
(Univ. Libre de Bruxelles, Belgium)
Beyond the Standard Model
Poster
The recent discovery of a Higgs boson at the LHC sets strong constraints on a simple, sequential third generation of quarks. Still, the presence of new physics is necessary to stabilize the mass of the Higgs boson, if one wants to avoid an unnaturally high level of fine tuning of the theory. In supersymmetry, bosonic top quark partners would cancel the loops that induce this large instability....
Mr.
Mario Merola
(INFN Sezione di Napoli (IT))
Top-quark and ElectroWeak Physics
Poster
A search for single top-quark production in the s channel in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 8 TeV by the CMS detector at the LHC is presented. Leptonic decay modes of the top quark with an electron or muon in the final state are considered. The signal is extracted by performing a maximum-likelihood fit to the distribution of a multivariate discriminant defined...
Tomas Javurek
(Mr.)
Beyond the Standard Model
Poster
Weak scale supersymmetry is one of the best motivated and studied Standard Model extensions. It predicts the existence of new heavy coloured particles called squarks and gluinos which are the supersymmetric partners of the quarks and gluons respectively. The poster summarises latest results on inclusive searches for supersymmetric squarks and gluinos in events containing jets and missing...
Ms.
Elena Romero
(IFIC)
Beyond the Standard Model
Poster
This poster presents the results of a search for squarks and gluinos in final state events containing jets, missing transverse momentum and at least one isolated lepton (electron or muon), using 20.3 fb−1 of proton-proton collision data at √s = 8 TeV recorded by the ATLAS experiment at the LHC in 2012. Exclusions limits are placed in supersymmetric simplified models and specific SUSY breaking...
Mr.
Roger Caminal Armadans
(Institut de Física d'Altes Energies (IFAE))
Beyond the Standard Model
Poster
This poster presents searches for supersymmetry in compressed scenarios using 20.3 fb-1 of proton-proton collision data at sqrt(s) = 8 TeV recorded by the ATLAS experiment at the LHC. The analysis has been optimized for the stop decaying into a charm quark plus a neutralino SUSY signal. Different signal regions have been defined with different thresholds in ETmiss and Pt of the leading jet,...
Mr.
Mario Masciovecchio
(ETH Zürich, Switzerland)
Beyond the Standard Model
Poster
Searches for standard model like Higgs bosons produced in cascade decays of SUSY particles are presented. This includes both strong as well as weak production, and higgs decays to final states with quarks, leptons and photons.
Dr.
Matteo Tenti
(INFN - BO)
Neutrino Physics
Poster
The OPERA hybrid detector, designed to prove neutrino oscillations in the νμ → ντ channel, was exposed to the CNGS νμ beam at a distance of 730 km from the neutrino source. Profiting of the tracking capabilities of its Emulsion Cloud Chamber system, OPERA can perform also a search for νμ → νe oscillations. Current results are compatible with the non-oscillation hypothesis in the three-flavour...
Dr.
Pablo del Amo Sánchez
(LAPP - IN2P3 - CNRS / Université de Savoie)
Neutrino Physics
Poster
The OPERA experiment was designed to provide evidence of Nu_mu-->Nu_tau neutrino oscillations in appearance mode through the detection of the tau lepton produced in Nu_tau Charged Current interactions. The OPERA detector was exposed to the CNGS muon neutrino beam from CERN to Gran Sasso, 730 km away from the source, and collected data from 2008 to 2012.
We report on the search procedure...
Paolo Dondero
Beyond the Standard Model
Poster
Supersymmetric theories offer one of the most promising solutions to the Standard Model problems, addressing in particular the naturalness problem of the theory. Within this scenario the search of the top quark supersymmetric partner, called stop, plays a key role. The ATLAS Experiment has developed a dedicated strategy to search for this particle. The results obtained searching for stop pair...
Dr.
Kate Shaw
(The International Centre for Theoretical Physics (ICTP))
Brout-Englert-Higgs physics
Poster
A theoretically well motivated and interesting decay channel of the Higgs boson involves stable weakly interacting or neutral particles that do not interact with the detector. Searches have been performed in proton-proton collisions at the LHC using the ATLAS Detector for an invisibly decaying Higgs Boson produced in association with a Z Boson, and with an additional jet leading to a jet plus...
Mr.
Vicente Jose Rives Molina
(Universitat de Barcelona)
Beyond the Standard Model
Poster
The observation of neutrino oscillations has re-opened the case for searches of lepton-flavour violating decays. We report on recent results on searches for short or long-lived Majorana heavy neutrinos in B&arr;μμπ and τ→μμμ decays.
Dr.
Carla Marín Benito
(Universitat de Barcelona)
Beyond the Standard Model
Poster
Its forward acceptance and good resolution allow LHCb to perform competitive searches for heavy particles beyond the Standard Model. We report a search for the stau particle with the LHCb detector and give our prospects for searches of Hidden Valley particles.
Dr.
Thomas REIS
(Univ. Libre de Bruxelles, Belgium)
Beyond the Standard Model
Poster
Searches for new massive resonances that decay to dielectrons, dimuons or electron-muon pairs are presented. Resonances in the dielectron and dimuon decay channels arise in many well established theories beyond the standard model, like the sequential standard model or grand unified theories. The search in the electron-muon channel opens the field for theories where the lepton number is not...
Mr.
Maximilian Knut Kiesel
(RWTH, I. Physik. Inst., Germany)
Beyond the Standard Model
Poster
In this talk, the latest results from CMS on searches for supersymmetry in final states with photons are presented using 20/fb of data from the 8 TeV LHC run. A variety of complementary final state signatures and methods are used to probe gluino, squark and Electroweak SUSY production.
Steven Schramm
(University of Toronto)
Beyond the Standard Model
Poster
Searches for monojet plus missing transverse momentum signatures are sensitive to new phenomena involving invisible particles, such as the pair-production of dark matter, one particularly well motivated possibility. We report on the most recent search for monojet signatures with the ATLAS detector. The effective field theory models typically used for monojet dark matter interpretations have...
Prof.
Andre Nepomuceno
(Universidade Federal Fluminense)
Beyond the Standard Model
Poster
In this work one investigates the LHC potential for discovering doubly-charged vector bileptons considering the measurable process p,p → μ^{+},μ^{+},μ^{-},μ^{-},X. We perform the study assuming different bilepton masses and different exotics quark masses. The process cross-section is calculated at leading-order using the CALCHEP package. Combining this calculation with the latest ATLAS results...
Mr.
Alexander Bylinkin
(ITEP)
Strong Interactions and Hadron Physics
Poster
Inclusive charged hadron cross sections, $d\sigma/d\eta$, and the mean transverse momenta, $<p_t>$, are considered within the two component model, which combines the power-like and the exponential terms in $p_T$. The observed dependences of the spectra shape on energy and the event multiplicity qualitatively agree with that expected from the Regge theory with the perturbative QCD pomeron....</p_t>
Prof.
Eulogio Oset
(IFIC, University of Valencia)
Strong Interactions and Hadron Physics
Poster
The BES data on the $J/\psi \to \eta K^{*0}\bar{K}^{*0}$ reaction show a clear enhancement in the $K^{*0}\bar{K}^{*0}$ mass distribution close to the threshold of this channel. Such an enhancement is usually a signature of a $L=0$ resonance around threshold, which in this case would correspond to an $h_1$ state with quantum numbers $I^G(J^{PC})=0^-(1^{+-})$. A state around $1800\ \text{MeV}$...
Ms.
Lu Cao
(Forschungszentrum Juelich)
Computing and Data Handling
Poster
The PANDA experiment is one of the major projects at the Facility for Antiproton and Ion Research (FAIR) and will study a wide range of physics topics with beams of antiprotons incident on fixed proton or complex nuclei targets. One of the interesting issues is the Ds semileptonic decay, which is governed by both the weak and strong forces. Here the strong interaction effects can be...
Dr.
Matthew King
(IFIC)
Detector RD and Performance
Poster
The MoEDAL experiment (Monopole and Exotics Detector at
the LHC) is designed to directly search for magnetic
monopoles and other highly ionising stable or metastable
particles at the LHC. The MoEDAL detector comprises an
array of plastic Nuclear Track Detectors deployed around
the P8 intersection region of the LHCb detector,
combined with trapping volumes for capturing charged...
Dr.
Nameeqa Firdous
(University of Innsbruck)
Strong Interactions and Hadron Physics
Poster
Minimum bias and underlying event data from the LHC and Tevatron have been used to tune the PYTHIA 6.4.28. We tune Multiple Parton Interaction (MPI) parameters including three Lambda parameters. It is shown that these tunings describe selected distributions quite well, especially pt distribution at three collision energies, 0.9 TeV , 1.9 TeV and 7 TeV provided that charge particles with pT >...
Prof.
Ivanka Bozovic Jelisavcic
(VINCA Institute of Nuclear Sciences)
Brout-Englert-Higgs physics
Poster
The branching fraction measurement of the SM-like Higgs boson decay into two muons at 1.4 TeV CLIC will be presented. The study is performed in the fully simulated ILD detector concept for CLIC, taking into consideration all the relevant physics and beam-induced backgrounds, as well as instrumentation of the very forward region to tag high-energy electrons. In this analysis we show that BR...
Dr.
Frederic YERMIA
(SUBATECH CNRS/Université de Nantes/EMN)
Neutrino Physics
Poster
Sterile neutrinos have been considered as a possible explanation for the recent reactor and Gallium anomalies arising from reanalysis of reactor flux and calibration data of previous neutrino experiments. A way to test this hypothesis is to look for distortions of the anti-neutrino energy caused by oscillation from active to sterile neutrino at close stand-off (~ 6-8m) of a compact reactor...
Chirilli Giovanni Antonio
(The Ohio State University)
Strong Interactions and Hadron Physics
Poster
I will present the solution of the next-to-leading order (NLO) BFKL equation obtained constructing the eigenfunctions of the NLO kernel using an expansion around the LO BFKL (conformal) eigenfunctions. This method can be used to construct the solution of the BFKL equation with the kernel calculated to an arbitrary order in the coupling constant. Then, using the solution of the NLO BFKL...
Dr.
Richard Gran
(University of Minnesota Duluth)
Education and Outreach
Poster
There has been an education and public outreach program at the Soudan Underground Lab in Minnesota for twenty-five years, for a long time funded piecewise from multiple sources, and for seven years funded by dedicated grants from the U.S. National Science Foundation. The current program hosts an annual open house and a summer program where three undergraduate interns and two or three high...
Dr.
Wesley Ketchum
(Los Alamos National Laboratory)
Neutrino Physics
Poster
MicroBooNE is a liquid argon time projection chamber (LArTPC) that will detect neutrinos from Fermilab’s Booster Neutrino Beamline. From the large sample of neutrino interactions that will be collected, MicroBooNE will perform short-baseline neutrino oscillation searches, will resolve the source of the MiniBooNE “low-energy excess,” and will measure cross sections and properties of ~1 GeV...
Mr.
Enrico Scantamburlo
(University of Geneva)
Neutrino Physics
Poster
The T2K collaboration presents studies of muon neutrino event distributions on water, at neutrino energies of the order of 1 GeV, using an improved vertex algorithm at the near detector ND280. This sample can be used to measure neutrino interaction on water and to constrain the expected neutrino energy spectrum at Super-Kamiokande. This sample requires vertices in the FGD2, a detector composed...
Dr.
Pavel Krokovny
(Budker Institute of Nuclear Physics and Novosibirsk State University)
Beyond the Standard Model
Poster
Many extensions of the Standard Model (SM) introduce an additional U(1) interaction, which is mediated by a U(1) boson, often by a Higgs mechanism adding a dark Higgs (or dark Higgses) to the models. This gauge boson, also known as the dark photon, typically has very weak coupling to SM particles and of low mass (MeV to GeV). The ideal tools to discover such particles are therefore not...
Roberto Oliveira
(Universidade Estadual de Campinas and Northwestern University)
Neutrino Physics
Roberto Oliveira
(Universidade Estadual de Campinas and Northwestern University)
Neutrino Physics
Poster
In this work we show a complete development for three neutrino oscillation taking into account the matter effect from the open quantum system approach. Open quantum system approach has a rigorous set of the statements and when it is applied on neutrino oscillation, due to dissipative phenomena, the neutrinos exhibit new and peculiar effects, in special, decoherence and relaxation. We use the...
Dr.
Ruchi Gupta
(Panjab Univ., India)
Strong Interactions and Hadron Physics
Poster
A study of inclusive topological distributions of three- and four-jet events has been conducted by the CMS Collaboration at the LHC with a data sample corresponding to an integrated luminosity of 5.05 fb$^{-1}$ at a centre of mass energy of 7 TeV. Kinematic and angular distributions in inclusive multijet final states serve as a natural probe of quantum chromodynamics and can reveal its inner...
Dr.
Joshua Robert Hardenbrook
(Princeton Univ., United States)
Beyond the Standard Model
Poster
We discuss the latest SUSY search results using the razor kinematic variables at CMS. The stop, sbottom and gluino limits are presented in various benchmark simplified models and implications for natural SUSY are discussed.
Mr.
Valerio Vagelli
(Karlsruhe Institute of Technology), Dr.
Zhili Weng
(Massachusetts Institute of Technology (MIT) USA)
Astroparticle Physics and Cosmology
Poster
The AMS-02 detector is is a large acceptance cosmic ray detector operating on the International Space Station since May 2011.
About 40 billion events have been collected by the instrument in the first 30 months of data taking.
Among them, 10.5 million of electrons and positrons have been selected to measure the combined electron plus positron energy spectrum at energies up to the TeV.
In...
Dr.
HyangKyu Park
(Center for Underground Physics, Institute of Basic Science)
Neutrino Physics
Poster
The AMoRE (Advanced Mo-based Rare process Experiment) collaboration is going to use calcium molybdate (depCa100MoO4) crystal scintillators enriched in 100Mo and depleted in 48Ca to search for neutrinoless double-beta decay (DBD) of 100Mo using a technique of cryogenic scintillating bolometers at the underground laboratory in Korea. The collaboration is going to utilize metallic magnetic...
Mr.
Pietro Marino
(Scuola Normale Superiore and INFN Pisa)
Computing and Data Handling
Poster
We present the results of an R&D study for a specialized processor capable of precisely reconstructing events with hundreds of charged-particle tracks in pixel and silicon strip detectors at 40 MHz, thus suitable for processing LHC events at the full crossing
frequency. For this purpose we design and test a massively parallel pattern-recognition algorithm, inspired to the current...
Mr.
Tomoya Iizawa
(Waseda university)
Detector RD and Performance
Poster
After a very successful data taking run, the ATLAS experiment is being upgraded to cope with the higher luminosity and higher center of mass energy that the Large Hadron Collider will provide in the next years. The Fast Tracker (FTK) trigger system, part of the ATLAS trigger upgrade program, is a highly parallel hardware device designed to operate at the level-1 trigger output rate. FTK is a...
Dr.
Steven Goldfarb
(University of Michigan)
Education and Outreach
Poster
High Energy Physics began utilising Machine Learning technique such as Multivariate Analysis, Neural Nets and Boosted Decision Trees since the 90’s, but the connections between the HEP scientific community and the computer science community are poor and can be improved.
In HEP there are exciting and difficult problems such as the extraction of the Higgs boson signal, while computer...
Mr.
Takashi Mitani
(Waseda University)
Computing and Data Handling
Poster
Triggering on hadronic tau decays at ATLAS is essential for a wide
variety of analyses of interesting physics processes at ATLAS. Among
those are the measurement of the Higgs boson in the di-tau final state
and multiple searches for physics beyond the Standard Model. The
ATLAS tau trigger combines information from the tracking detectors and
calorimeters to identify the signature of...
Dr.
Takashi Iida
(Osaka University)
Neutrino Physics
Poster
Neutrino less double beta decay is the only practical way to prove the Majorana nature of the neutrino. CANDLES is a 48Ca double beta decay experiment with CaF2 scintillator. The CANDLES III (U.G.) detector is currently running with 300kg CaF2 crystals in the Kamioka underground observatory, Japan. New light collection system was installed in 2012, and accordingly photo-coverage has been...
Mr.
luca mastrolorenzo
(Laboratoire Leprince Ringuet (Ecole Polytechnique - FR ))
Detector RD and Performance
Poster
The CMS experiment implements a sophisticated two-level online selection system that achieves a rejection factor of nearly 10e5. The first level (L1) is based on coarse information coming from the calorimeters and the muon detectors while the High Level Trigger combines fine-grain information from all sub-detectors. During Run II, the centre of mass energy of the LHC collisions will be...
Dr.
Loredana Gastaldo
(Kirchhoff Institute for Physics, Heidelberg University)
Neutrino Physics
Poster
The Electron-Capture-163Ho experiment, ECHo, aims to investigate the electron neutrino mass in the sub-eV range by means of the analysis of the calorimetrically measured electron capture spectrum of 163Ho. Arrays of low temperature metallic magnetic calorimeters having the 163Ho source embedded in the absorber will be used for the measurement of the spectrum. A precise description of the...
Dr.
Nicolas Arnaud
(LAL (CNRS/IN2P3 and Université Paris Sud))
Education and Outreach
Poster
“Passeport pour les deux infinis” (« Passport for the two infinities », in short Pass2i) is a French educational project aiming at promoting the physics of the “infinitely small” (particle physics) and of the “infinitely big” (cosmology & astrophysics) to high-school teachers and students. These two fields of basic science are indeed more and more tightly connected, with common topics and...
Dr.
torrente-lujan emilio
(universidad de murcia)
Brout-Englert-Higgs physics
Poster
On the light of the recent LHC boson discovery, we present a phenomenological evaluation of the ratio $\rho_t=m_Z m_t/m_H^2$, from the LHC combined $m_H$ value, we get ($ (1\sigma)$)
$$\rho_t^{(exp)}= 0.9956\pm 0.0081.$$
This value is close to one with a precision of the order
$\sim 1\%$. Similarly we evaluate the ratio $\rho_{Wt}=(m_W + m_t)/(2 m_H)$. From the up-to-date mass values we...
Prof.
Giovanni Organtini
("Sapienza" Università di Roma)
Education and Outreach
Poster
The Higgs mechanism that gives the mass to particles as a result of the interaction between a massless particle and a scalar field is reformulated in terms of purely classical mechanics, using a simple formalism suitable for undergraduate students. The need for such a field is justified with arguments following a review of the concept of energy and special relativity.
While most of the...
Mr.
Michael Geller
(Technion, Israel)
Brout-Englert-Higgs physics
Poster
We investigate a Randall-Sundrum model with an SU(2) doublet propagating in the bulk. Upon calculating its gravitational effect we find that a stabilized radius can be generated without the use of an additional scalar, as needed for example in the Goldberger-Wise (GW) mechanism, and with no additional fine-tuning other than the inescapable one due to the cosmological constant; similar tuning...
Mr.
Sergio Calvente
(Universidad Autonoma de Madrid)
Strong Interactions and Hadron Physics
Poster
Recent measurements by the ATLAS Collaboration of b- and light jet shapes in ttbar final states at the LHC, show clear evidence that b-jets are wider. There is also evidence that b-jets in ttbar final states are narrower than those produced inclusively. This can be interpreted as due to the two different colour structures considered. We apply multivariate techniques on MC generated data to...
Dr.
Joel Jones-Perez
(Universitat de Valencia - IFIC)
Neutrino Physics
Poster
The minimal 3+2 neutrino model is a Type-I seesaw model with two Weyl fermions, singlets under the Standard Model. Apart from light neutrino masses and mixings, this model can be fully described by four additional parameters.
In this work, we study the minimal 3+2 neutrino model in scenarios where the singlets have masses at the GeV scale. This can lead to Higgs decays into heavy neutrinos,...
Prof.
Michelle Dolinski
(Drexel University)
Neutrino Physics
Poster
The nEXO Collaboration is designing a very large detector for neutrino-less double beta decay of Xe-136. The nEXO detector is rooted in the the currently-running EXO-200 program, which has reached a sensitivity for the half life of the decay of 1.9 x 10^25 years with and exposure of 99.8 kg-yr. The baseline nEXO design uses 5 tonnes of liquid xenon, enriched in the mass 136 isotope, in a...
Mr.
Christopher Heidt
(University of California at Riverside)
Accelerator Physics and Future Colliders
Poster
The International Muon Ionisation Cooling Experiment is progressing towards full demonstration of the feasibility of this cooling technology decisive for neutrino physics and muon colliders. Its next step IV should provide the first precise measurements of emittances and first evidence of cooling. Spectrometer solenoids, muon trackers and absober-FC (focus coil) modules are being assembled to...
Dr.
Pablo Roig
(Instituto de Física, UNAM)
Strong Interactions and Hadron Physics
Poster
The pion transition form factor, computed within Chiral Perturbation Theory with Resonances, is confronted to data. Good agreement is found including only the lightest multiplet of vector and pseudoscalar resonances. Short-distance constraints obtained by matching the Vector-Vector-Pseudoscalar resonance Green function to its QCD counterpart are satisfied with high accuracy. We evaluate the...
Dr.
Felix Gonzalez-Canales
(IFIC-CSIC Universidad de Valencia)
Neutrino Physics
Poster
We discuss the masses and mixings of Quarks and leptons as the realization of an S(3) flavour permutational symmetry. In this model the flavour S(3) symmetry is left unbroken and the concept of flavour is extended to the Higgs sector by introducing in the theory three Higgs fields which are SU(2) doublets. The mass matrices of fermions are reparametrized in terms of their eigenvalues, and...
Dr.
Laura Segui
(Oxford University)
Neutrino Physics
Poster
The SNO+ project will make use of the basic SNO detector infrastructure to create a large liquid scintillator experiment to explore a variety of fundamental physics, with a strong focus on neutrinoless double beta decay using 130Te. Substantial modifications to the original SNO detector are being affected in order to achieve this. The initial water fill is currently underway, with the...
Myeongjae Lee
(LBNL)
Detector RD and Performance
Poster
The Mu2e experiment will search for neutrinoless conversion of muons into electrons in the field of an aluminum nucleus. The signature of this process is an electron with energy nearly equal to the muon mass. Precise and robust measurement of the outgoing electron momentum is an essential element to the experiment. We describe the
design of a low mass tracking system to meet this...
Robert Fischer
(III. Physikalisches Institut A, RWTH Aachen)
Education and Outreach
Poster
The VISPA internet platform enables users to remotely run simple Python scripts or complex analysis chains and view resulting plots or inspect their output data. With a standard web browser as the only user requirement on the client-side, the system becomes suitable for e-learning / blended learning approaches for university physics students.
VISPA was used in two consecutive years each by...
Dr.
Konstantin Kouzakov
(Skobeltsin Nuclear Physics Institute, Moscow State University)
Neutrino Physics
Poster
We give an overview of the current theoretical studies on neutrino-atom scattering processes. We focus on the ionization channel of these processes which is studied in experiments searching for neutrino magnetic moments. Recent developments in the theory of atomic ionization by impact of reactor antineutrinos are discussed. It is shown that the stepping approximation is well applicable for the...
Giacomo Sguazzoni
Detector RD and Performance
Poster
The CMS tracker is the largest silicon detector ever built, covering 200 square meters and providing an average of 14 high-precision measurements per track. Tracking is essential for the reconstruction of objects like jets, muons, electrons and tau leptons starting from the raw data from the silicon pixel and strip detectors. Track reconstruction is widely used also at trigger level as it...
Dr.
mia tosi
(Universita' degli Studi di Padova & INFN)
Detector RD and Performance
Poster
The trigger systems of the LHC detectors play a crucial role in determining the physics capabilities of the experiments. A reduction of several orders of magnitude of the event rate is needed to reach values compatible with detector readout, offline storage and analysis capability. The CMS experiment has been designed with a two-level trigger system: the Level-1 Trigger (L1T), implemented on...
Mr.
Javier Llorente
(Universidad Autonoma de Madrid)
Strong Interactions and Hadron Physics
Poster
We compute the transverse energy-energy correlations (TEEC) and its asymmetry (AEEC) in NLO for p-p collisions at three c.m. energies i.e. 7, 8 and 13 TeV. We show that the TEEC and AEEC distributions exhibit very small sensitivity to the QCD factorization and renormalization scales as well as to the proton structure function choice. We further discuss the dependence on pT_min, the minimum...
Mr.
Alexander Bylinkin
(ITEP)
Strong Interactions and Hadron Physics
Poster
Transverse momentum spectra of protons and anti-protons from
RHIC and LHC experiments (PHENIX ,ALICE, CMS) are considered. The data are fitted with the universal formula that includes the energy dependent slope as the main parameter. The estimated slopes are changing with energy. The dependence of average transverse momenta $<p_t>$ on $\sqrt{s}$ shows the behavior $ ~ s^{0.05}$, which is...</p_t>
Jan Hasenbusch
(Bonn University)
Beyond the Standard Model
Poster
Semileptonic and leptonic B meson decays involving a heavy $\tau$ lepton are sensitive to new physics scenarios with an extended Higgs sector, such as the type II two Higgs doublet model. Branching ratios for the decays $B \to D^* \tau \nu$ and $B \to D \tau \nu$ in excess of the Standard Model expectation reported by both the Belle and BaBar experiments have thus generated broad interest. In...
Mr.
Alexander Bylinkin
(ITEP)
Strong Interactions and Hadron Physics
Poster
The shapes of invariant differential cross-sections for identified pi+-,K+-, p and pbar production as function of transverse momentum measured in $pp$ collisions by the PHENIX, ALICE and CMS experiments (from 62.4 to 7000 Gev c.m.s. energy) are analyzed in terms of recently introduced approach. Simultaneous fit of these data to the sum of exponential and power-law terms show significant...
Pablo Moreno Marti
(Instituto de F\'isica Corpuscular (IFIC), Centro Mixto Universidad de Valencia - CSIC)
Detector RD and Performance
Poster
The Tile Calorimeter (TileCal) is the hadronic calorimeter covering the central region of the ATLAS experiment at LHC. The TileCal readout consists of about 10000 channels. The bulk of its upgrade will occur for the High Luminosity LHC phase (phase 2) where the peak luminosity will increase 5x compared to the design luminosity (10^34 cm−2s−1) but with maintained energy (i.e. 7+7 TeV). An...
Philipp Roloff
(CERN)
Detector RD and Performance
Poster
A future CLIC vertex detector must satisfy the precision physics needs and be compatible with the challenging beam structure at CLIC. As a result the pixel detector is required to have excellent spatial resolution, precise time-tagging, full geometrical coverage, extremely low mass, low occupancy and sufficient heat removal from sensors and readout. A vertex detector concept based on two...
Dr.
Andrea Carlo Marini
(ETH Zürich (Switzerland))
Top-quark and ElectroWeak Physics
Poster
The Poster presents the photon part of the Z/g cross section ratio, as well as the ratio itself. The Z/g cross section ratio is not only a precise measurements that probes the strenght of the perturbative corrections, and the pdf composition, but also a test to validate with CMS-collected data a commonly used method to estimate backgrounds raising from Z to invisibles decays in BSM searches....
