Conveners
Beyond the Standard Model
- Juan Alcaraz Maestre (CIEMAT)
Beyond the Standard Model
- Filip Moortgat ()
Beyond the Standard Model
- Gustavo Burdman (University of Sao Paulo)
Beyond the Standard Model
- Sudhir Vempati (Centre for High Energy Physics, Indian Institute of Science, Banglaore India)
Beyond the Standard Model
- Tobias Golling (Yale)
Beyond the Standard Model
- Tobias Golling (Yale)
Description
Allocated time includes time for questions as follows: 15 (13+2), 20 (17+3), 30 (25+5)
Mr.
Javier Duarte
(California Institute of Technology)
03/07/2014, 11:00
Beyond the Standard Model
Oral presentation
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.
Dr.
Jovan Mitrevski
(Ludwig-Maximilians-Universität München)
03/07/2014, 11:15
Beyond the Standard Model
Oral presentation
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.
Mr.
Nickolas Mc Coll
(UC Santa Barbara)
03/07/2014, 11:30
Beyond the Standard Model
Oral presentation
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.
Joao Firmino da Costa
(CEA Saclay)
03/07/2014, 11:45
Beyond the Standard Model
Oral presentation
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...
Dr.
Robert Schoefbeck
(HEPHY Vienna)
03/07/2014, 12:00
Beyond the Standard Model
Oral presentation
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.
Mr.
Björn Sarrazin
(Physikalisches Institut, Bonn University, Germany)
03/07/2014, 12:20
Beyond the Standard Model
Oral presentation
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...
Prof.
Michael Klasen
(Institute for Theoretical Physics, University of Münster)
03/07/2014, 12:35
Beyond the Standard Model
Oral presentation
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.
Dr.
Andrée Robichaud-Véronneau
(McGill University)
03/07/2014, 12:50
Beyond the Standard Model
Oral presentation
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...
Dr.
Owen Long
(UC Riverside, United States)
03/07/2014, 13:05
Beyond the Standard Model
Oral presentation
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.
Dr.
Krzysztof Rolbiecki
(IFT Madrid)
03/07/2014, 15:00
Beyond the Standard Model
Oral presentation
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...
Mr.
Kees Jan de Vries
(Imperial College London)
03/07/2014, 15:15
Beyond the Standard Model
Oral presentation
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.
Mr.
Matthew Cahill-Rowley
(SLAC National Accelerator Laboratory)
03/07/2014, 15:30
Beyond the Standard Model
Oral presentation
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...
Mr.
Roger Caminal Armadans
(Institut de Física d'Altes Energies (IFAE))
03/07/2014, 15:45
Beyond the Standard Model
Oral presentation
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.
Dr.
Pablo Martinez Ruiz Del Arbol
(ETH Zürich, Switzerland)
03/07/2014, 16:05
Beyond the Standard Model
Oral presentation
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.
Dr.
Luca Fiorini
(IFIC / U. Valencia)
03/07/2014, 16:20
Beyond the Standard Model
Oral presentation
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.
Paul Lujan
(Princeton University)
03/07/2014, 16:35
Beyond the Standard Model
Oral presentation
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.
Matthew King
(IFIC)
03/07/2014, 16:50
Beyond the Standard Model
Oral presentation
Several extensions of the Standard Model like supersymmetric scenarios predict the existence of massive long-lived particles, and some of these postulate the existence of a hidden sector of particles. We report on searches for production of long-lived particles resulting in displaced vertices, abnormal specific energy loss, appearing or disappearing tracks, or collimated lepton-jets. The talk...
Mr.
Jan Kretzschmar
(University of Liverpool)
03/07/2014, 17:05
Beyond the Standard Model
Oral presentation
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.
Jong Soo Kim
(IFT Madrid)
04/07/2014, 09:00
Beyond the Standard Model
Oral presentation
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...
Mr.
Cristian Bosch Serrano
(University of Valencia)
04/07/2014, 09:15
Beyond the Standard Model
Oral presentation
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...
Pyungwon Ko
(KIAS)
04/07/2014, 09:30
Beyond the Standard Model
Oral presentation
We present a scale invariant extension of the standard model with new QCD-like strong interaction in the hidden sector. A scale ΛH is dynamically generated in the hidden sector by dimensional transmutation, and chiral symmetry breaking occurs in the hidden sector. This scale is transmitted to the SM sector by a real singlet scalar messenger S, and can trigger electroweak symmetry breaking...
Dr.
Ignasi Rosell
(Universidad CEU Cardenal Herrera & IFIC)
04/07/2014, 09:45
Beyond the Standard Model
Oral presentation
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...
Bogumila Swiezewska
(University of Warsaw)
04/07/2014, 10:00
Beyond the Standard Model
Oral presentation
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...
Aoife Bharucha
(TU Munich)
04/07/2014, 10:15
Beyond the Standard Model
Oral presentation
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.
Mrs.
María Luisa López Ibáñez
(Universidad de Valencia)
04/07/2014, 10:30
Beyond the Standard Model
Oral presentation
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...
Dr.
Federico Mescia
(ECM, Universitat de Barcelona)
04/07/2014, 10:45
Beyond the Standard Model
Oral presentation
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.
Stefano Di Chiara
(University of Helsinki)
04/07/2014, 11:30
Beyond the Standard Model
Oral presentation
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...
Prof.
Steven Lowette
(Vrije Universiteit Brussel)
04/07/2014, 12:00
Beyond the Standard Model
Oral presentation
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.
Dr.
Ning Zhou
(University of California, Irvine)
04/07/2014, 12:15
Beyond the Standard Model
Oral presentation
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.
Francesco Santanastasio
(Sapienza, University of Rome)
04/07/2014, 12:30
Beyond the Standard Model
Oral presentation
The search for heavy resonances involving bosons in ATLAS and CMS are presented. These final states include diphoton, VV, VH, and HH resonances.
Koji Terashi
(University of Tokyo)
04/07/2014, 12:50
Beyond the Standard Model
Oral presentation
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.
Francesco Romeo
(IHEP of Beijing)
04/07/2014, 13:10
Beyond the Standard Model
Oral presentation
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.
Mr.
Martin Stoll
(The University of Tokyo)
05/07/2014, 11:30
Beyond the Standard Model
Oral presentation
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.
Timothy Andeen
(Columbia University)
05/07/2014, 11:45
Beyond the Standard Model
Oral presentation
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.
Roman Kogler
(University of Hamburg, Germany)
05/07/2014, 12:00
Beyond the Standard Model
Oral presentation
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.
Frederik Ruehr
(University of Freiburg)
05/07/2014, 12:15
Beyond the Standard Model
Oral presentation
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.
Lesya Shchutska
(Univ. of Florida, United States)
05/07/2014, 12:30
Beyond the Standard Model
Oral presentation
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.
Mikael Berggren
(DESY)
05/07/2014, 12:45
Beyond the Standard Model
Oral presentation
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.
Philipp Roloff
(CERN)
05/07/2014, 13:00
Beyond the Standard Model
Oral presentation
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...
Maurizio Pierini
(CERN)
05/07/2014, 13:15
Beyond the Standard Model
Oral presentation
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. Statistics of 1012 Z, 108 W pairs, 2 106 ZH events, and 106 top pairs can be...
Jan Hasenbusch
(Bonn University)
05/07/2014, 15:00
Beyond the Standard Model
Oral presentation
Searches for exotic phenomena at Belle are presented.
Dr.
Markus Ebert
(SLAC, USA)
05/07/2014, 15:20
Beyond the Standard Model
Oral presentation
Searches for exotic phenomena at Babar are presented.
Ricardo Vazquez Gomez
(Universitat de Barcelona)
05/07/2014, 15:40
Beyond the Standard Model
Oral presentation
Searches for exotic phenomena at LHCb are presented.
Prof.
Miguel-Angel Sanchis-Lozano
(IFIC - University of Valencia)
05/07/2014, 15:55
Beyond the Standard Model
Oral presentation
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...
Dr.
Siba Prasad Das
(IOP, Bhubaneswar, India)
05/07/2014, 16:10
Beyond the Standard Model
Oral presentation
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...
Dr.
Graziano Venanzoni
(LNF-INFN Frascati)
05/07/2014, 16:25
Beyond the Standard Model
Oral presentation
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...
Ms.
Seyda Ipek
(University of Washington)
05/07/2014, 16:40
Beyond the Standard Model
Oral presentation
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...
Dr.
Anthony Palladino
(Laboratori Nazionali di Frascati dell'INFN)
05/07/2014, 16:55
Beyond the Standard Model
Oral presentation
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...
Dr.
Makoto Miura
(Kamioka observatory, ICRR)
05/07/2014, 17:10
Beyond the Standard Model
Oral presentation
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...
