Conveners
Particle and Theoretical Physics I
- There are no conveners in this block
Particle and Theoretical Physics I
- JOSE SALT (IFIC)
- Santiago Gonzalez de la Hoz (IFIC)
- Isidro González Caballero (Universidad de Oviedo)
Particle and Theoretical Physics I
- Santiago Gonzalez de la Hoz (IFIC)
- JOSE SALT (IFIC)
- Isidro González Caballero (Universidad de Oviedo)
Luis Miguel García
(IFIC)
17/07/2017, 15:15
Particle and Theoretical Physics
Oral parallel contribution
Este análisis consiste en el estudio de las desintegraciones de bariones pesados con un quark b (Lambda_b, Xi_b y Omega_b ) con un fotón en el estado final. Esto tiene un doble interés:
- Las desintegraciones radiativas de bariones pesados no han sido observadas. Se pretende medir la fracción de desintegraciones de los canales antes mencionados.
- El Modelo Estándar (ME) predice que en...
Mr.
Manuel Garcia-Fernandez
(CIEMAT)
17/07/2017, 15:45
Particle and Theoretical Physics
Oral parallel contribution
Introduction
Cosmological measurements show that the expansion of the Universe is accelerating.
Generically, the entity that causes this acceleration (whether it is a new form of matter or modified gravity) is called dark energy [1]. Nevertheless, the nature of dark energy constitutes one of the biggest puzzles in Physics. Shedding light on dark energy requires the construction of big...
Ms.
Diana Navas Nicolás
(Ciemat)
17/07/2017, 16:15
Particle and Theoretical Physics
Oral parallel contribution
El objetivo principal del experimento Double Chooz es conseguir una medida precisa del ángulo de mezcla de neutrinos theta13. Este parámetro, el más pequeño de los tres ángulos de mezcla conocidos, se puede determinar a partir de la desaparición de los antineutrinos electrónicos emitidos por los dos reactores de la central nuclear de Chooz, en Francia. Dichos antineutrinos interaccionan con...
Joan Ruiz Vidal
(IFIC, University of Valencia - CSIC)
17/07/2017, 16:45
Particle and Theoretical Physics
Oral parallel contribution
Permanent electric dipole moments (EDMs) of fundamental particles provide powerful probes for physics beyond the Standard Model. We propose to search for the EDM of strange and charm baryons at LHC, extending the ongoing experimental program on the neutron, muon, atoms, molecules and light nuclei. The EDM of strange Λ baryons, selected from weak decays of charm baryons produced in pp...
Dr.
Maria Moreno Llacer
(CERN)
17/07/2017, 17:15
Particle and Theoretical Physics
Oral parallel contribution
The elementary particles, their properties and their interactions are described by the Standard Model (SM), which is the theoretical framework for the study of the strong interactions of quarks and gluons and the unified electroweak force by means of a modelling framework based on local gauge invariance. The SM is very successful in accounting for most of the observed phenomena at the...
Mr.
Javier Relancio
(Universidad de Zaragoza)
17/07/2017, 17:45
Particle and Theoretical Physics
Oral parallel contribution
We analyze the observability of an energy dependence, due to departures from special relativity, in delays of arrival times of particles produced by very distant sources. We find different conclusions depending on the model used for the source and the model used for the departures from special relativity both in the case of Lorentz invariance violations and in the case of a modification...
Adrian Alvarez Fernandez
(Ciemat)
17/07/2017, 18:15
Particle and Theoretical Physics
Oral parallel contribution
En la presente contribución se describe el trabajo de sincronización fina del sistema de disparo de las cámaras de deriva del detector CMS del LHC. Este estudio se ha realizado después de la actualización del sistema de disparo de las cámaras de deriva que ha tenido lugar a principios de 2016. La obtención de las correcciones en los retrasos de la señal de reloj que debe aplicarse a la...
Mr.
Pablo Fernández de Salas
(IFIC)
18/07/2017, 15:15
Particle and Theoretical Physics
Oral parallel contribution
Neutrino oscillations have shown that these weakly interacting particles have a mass different from zero, although cosmology points towards smaller values for their masses than previously expected. Despite the smallness of their mass, relic neutrinos coming from the time of their decoupling might cluster under strong gravitational potentials, such as the one of our galaxy, leading to an...
Carlota Andrés Casas
(USC)
18/07/2017, 15:45
Particle and Theoretical Physics
Oral parallel contribution
I will review the current status of the DGLAP global analysis of nuclear parton distribution functions, nPDFs. Th different nPDF sets available will be presented, focusing on the latest improvements and the next steps to be made.
Mr.
Carlos Francisco Erice
(Universidad de Oviedo)
18/07/2017, 16:15
Particle and Theoretical Physics
Oral parallel contribution
The measurements described in this contribution aim to study the SUSY model cases where the lightest fermionic superpartners of the SM bosons (namely, charginos and neutralinos) appear via electroweak production where the final state contains multiple leptonic particles.
As many searches that target similar final states are being developed a combination effort is being developed that will be...
Mr.
Xabier Cid Vidal
(USC - IGFAE)
18/07/2017, 16:45
Particle and Theoretical Physics
Oral parallel contribution
- Introduction
Located in Geneva (Switzerland), LHCb is one of the 4 big detectors of the Large Hadron Collider (LHC), the largest particle accelerator in the world, in which proton-proton collisions have been taking place since 2009 at different unprecedented energies. LHCb is a forward spectrometer whose acceptance and specific features makes it very complementary to the rest of the LHC...
Ms.
Laura Barranco Navarro
(ific)
18/07/2017, 17:15
Particle and Theoretical Physics
Oral parallel contribution
En el LHC, los quarks top se producen principalmente en pares top-antitop. Sin embargo, también se pueden producir quarks top únicos mediante procesos electrodébiles con la presencia del vértice Wtb. Debido a la estructura V-A de éste vértice, los quarks top producidos están muy polarizados. Por tanto, la presencia de nueva física que afectara al vértice Wtb afectaría también a la polarización...
Mr.
J. Manuel Penín
(University of Santiago de Compostela)
18/07/2017, 17:45
Particle and Theoretical Physics
Oral parallel contribution
We construct the string duals of the defect theories generated when Nf flavor D5-branes intersect Nc color D3-branes along a 2+1 dimensional subspace. We work in the Veneziano limit in which Nc and Nf are large and Nf =Nc is fixed. By smearing the D5-branes, we find supergravity solutions that take into account the backreaction of the flavor branes and preserve two supercharges. When the...
Mr.
Julián García Pardiñas
(Universidade de Santiago de Compostela)
19/07/2017, 15:25
Particle and Theoretical Physics
Oral parallel contribution
The huge abundance asymmetry between matter and antimatter present in our Universe remains as a mystery nowadays. Only the weak interaction (of the four fundamental ones) is known to mediate processes where the Charge-Parity (CP) symmetry is violated (this meaning different production rates for particles and antiparticles). However, the size of this effect is very small, and new sources of CP...
Sergio Sanchez Cruz
(Universidad de Oviedo)
19/07/2017, 15:55
Particle and Theoretical Physics
Oral parallel contribution
A search for a Higgs boson production in assotiation with a top-antitop quark pair is presented in pp collisions at $\sqrt{s} = $ 13 TeV recorded by CMS. We target topologies in which the scalar boson decays into $WW^*$, $ZZ^*$ and $\tau\tau$ and at least one of the top quarks decays leptonically by selecting events with two same-sign, three or four leptons in the final state. The search...
Mrs.
María Vieites Díaz
(Universidade de Santiago de Compostela)
19/07/2017, 16:25
Particle and Theoretical Physics
Oral parallel contribution
Within the Standard Model (SM) framework, charmless b decays proceeding via tree diagrams are suppressed by the smallness of the |Vub| term in the CKM matrix. Their contribution to the final decay rate is, therefore, of a similar order of magnitude of the otherwise sub-leading penguin process. This situation enhances the interference effects between the two processes and allows the measurement...
Ms.
Chiara Filomena Lastoria
(CIEMAT (Madrid))
19/07/2017, 16:55
Particle and Theoretical Physics
Oral parallel contribution
Short description of the two prototypes of the WA105 experiment.
Description of the light detection system for the experiment.
Main results of the PMTs characterization.
Mrs.
Clara Remon Alepuz
(PhD Student)
19/07/2017, 17:25
Particle and Theoretical Physics
Oral parallel contribution
The photon polarization in radiative Bs decays has been studied for the first time at LHCb using Run I data. Also it is discuss the ongoing analysis using Run II data, the time-dependent analysis of the Bs→φγ decay rate adding the information of the flavour of the Bs candidates at production.
Dr.
Rafael Delgado López
(Complutense University of Madrid)
19/07/2017, 17:55
Particle and Theoretical Physics
Oral parallel contribution
We use the nonlinear electroweak chiral Lagrangian (EChL) and the mathematical properties of the S-matrix (encoded into unitarization methods) for sampling the collider phenomenology of a (hypothetical) strongly interacting electroweak symmetry breaking sector (EWSBS) coupled with ttbar states. The EChL Lagrangian is used as an intermediate energy approximation (E~500 GeV), where the...
