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Rencontre de Physique des Particules 2010

Europe/Paris
Amphi Dirac (IPN Lyon)

Amphi Dirac

IPN Lyon

4, rue Enrico Fermi 69622 Villeurbanne Cedex France
Aldo Deandrea (IPNL) , Sacha Davidson (IPNL)
Description
L'édition 2010 de la Rencontre de Physique des Particules aura lieu du lundi 25 janvier à 14h00 au mercredi 27 janvier à 17h00 à l'Institut de Physique Nucléaire de Lyon. Les participants, particulièrement les jeunes, sont invités à présenter leurs travaux lors d'exposés de vingt minutes. Nous vous invitons donc à vous inscrire sur le site, en indiquant notamment le titre et le résumé de votre contribution, avant le 10 janvier. Nous prévoyons également un certain nombre d'exposés de revue ainsi qu'une table ronde sur les perspectives de notre discipline. The participants are invited to give 20 minute presentations of their work (in the language of their choice). People wishing to speak should indicate the title and abstract of their presentation when they register. Preference will be given to postdocs and students, and to those who register prior to January 10th. Some reviews on topics of recent interest, and a general discussion of the perspectives of the field are also planned. Grace à l'IN2P3 et à l'IPNL, nous disposons d'une petite somme d'argent pour financer les jeunes à la RPP. Si vous avez besoin d'aide financiere, SVP envoyer un mel à rpp2010@ipnl.in2p3.fr (support, à gauche). Some money is available to subsidise young people to attend the meeting. Please contact rpp2010@ipnl.in2p3.fr if you would like financial assistance. We thank the IN2P3 and the IPNL for this support. Comité local X. Artru, G. Cacciapaglia, S. Davidson, A. Deandrea, F. Gieres Comité scientifique D. Becirevic (LPT Orsay) G. Bélanger (LAPTH Annecy) J. Charles (CPT Marseille) A. Deandrea (IPN Lyon) C. Deffayet (APC Paris) A. Djouadi (LPT Orsay) E. Dudas (CPhT Palaiseau) P. Fayet (LPTENS Paris) B. Fuks (IPHC Strasbourg) Th. Gousset (Subatech Nantes) M. Klasen (LPSC Grenoble) G. Moultaka (LPTA Montpellier) J. Orloff (LPC Clermont-Ferrand) G. Salam (LPTHE Jussieu) G. Servant (IPhT Saclay) C. Volpe (IPN Orsay)
Slides
Participants
  • Abdelhak Djouadi
  • Adam Falkowski
  • ahmad tarhini
  • Albert Villanova del Moral
  • Aldo Deandrea
  • Alessio Notari
  • Alexandre Arbey
  • Ana M. Teixeira
  • Ann-Kathrin Maier
  • Benjamin Fuks
  • Björn Herrmann
  • Bogna Kubik
  • Carla Biggio
  • Cedric Delaunay
  • Cedric Weiland
  • Celine Boehm
  • Cheng Zhang
  • Cyrille Marquet
  • Daniel Albornoz Vasquez
  • Diego Guadagnoli
  • Drieu La Rochelle Guillaume
  • Dumitru Ghilencea
  • Eric PILON
  • Fabio Iocco
  • Fawzi BOUDJEMA
  • Felix Bruemmer
  • Francois Gieres
  • François Arleo
  • Frédéric JUGEAU
  • Giacomo Cacciapaglia
  • Guillaume Chalons
  • Hao Sun
  • Ingo Schienbein
  • James Kneller
  • Jean-Loic kneur
  • Jean-Marc Richard
  • Jean-Philippe Lansberg
  • jeremie llodra-perez
  • John Terning
  • Julien Lavalle
  • Julien Serreau
  • Karol Kovarik
  • Luca Panizzi
  • Machet Bruno
  • Michael Klasen
  • Michele Frigerio
  • Nazila Mahmoudi
  • Redamy Perez
  • Roberto Bonciani
  • Ruth Durrer
  • Sabine Kraml
  • Sacha Davidson
  • Sean Bailly
  • Shibi Rajagopalan
  • Silvano Tosi
  • Spyridon Argyropoulos
  • Stéphane Lavignac
  • sylvain fichet
  • Sébastien Descotes-Genon
  • Thierry Gousset
  • Thomas Konstandin
  • Tomas Jezo
  • Tzvetalina Stavreva
  • Vincenzo Laporta
  • Xavier ARTRU
    • 13:50 14:00
      Bienvenue 10m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
    • 14:00 14:45
      LHC Physics prospects (Exp.) 45m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Orateur: Dr Silvano Tosi (CNRS/IPNL)
      Slides
    • 14:45 15:05
      Study on MSSM models with effective operators 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      In this talk I will discuss some implications of higher order operators (dimension 5 and 6) on the MSSM spectrum. In particular I will state how the effective parameters appearing in those operators are constrained by current measurements, and how we can use the allowed range of those parameters to vary the masses in the Higgs, neutralinos and charginos sectors.
      Orateur: M. Guillaume Drieu La Rochelle (LAPTH)
      Paper
      Slides
    • 15:05 15:25
      Impact of squark generation mixing on the search for superpartners at the LHC 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      In supersymmetric models beyond minimal flavour-violation, generation-mixing terms in the squark or slepton sector can be sizeable. These off-diagonal entries of the corresponding mass matrices affect both the production and subsequent decay of SUSY particles at colliders. I will discuss scenarios that agree with the relevant experimental constraints and where the branching fractions of squarks into charm- and top-quarks are simultaneously large. I will the present recent results on the production of squarks and discuss possibly interesting signatures at the LHC.
      Orateur: Björn Herrmann (Universität Würzburg)
      Slides
    • 15:25 15:45
      Hidden Higgs 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      I will talk about a class of models where the light Higgs boson, 100 GeV or less, is consistent with all existing LEP constraints. Recent ideas along that direction include models where Higgs decays into four light hadronic jets, or into lepton jets. I will discuss the possibility to study this scenario at the LHC
      Orateur: M. Adam Falkowski (CERN)
      Slides
    • 15:45 16:15
      coffee break 30m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
    • 16:15 16:35
      Associated production of charged Higgs and top at LHC: the role of the complete electroweak supersymmetric contribution 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Orateur: Dr Luca Panizzi (IPNL)
      Slides
    • 16:35 16:55
      Hypercharge Anomaly-Mediated Supersymmetry Breaking at the LHC 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      I will discuss the phenomenological consequences of Hypercharge Anomaly-Mediated Supersymmetry Breaking at the LHC. This string-inspired model combines a U(1) form of mediation with anomaly mediation to provide a viable pattern of MSSM masses and interesting signatures at the LHC.
      Orateur: M. Shibi Rajagopalan (University of Oklahoma)
      Slides
    • 16:55 17:15
      Gravity waves from cosmological first-order phase transitions 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      First-order phase transitions proceed by nucleation and expansion of bubbles filled with a new phase of the medium. An example in particle physics is given by the transition in the early Universe from unbroken to broken electroweak gauge symmetry. At the end of the phase transition the expanding bubbles collide and partially release their energy into gravitational wave radiation. I will focus on two aspects of this process: 1) The energy budget using hydrodynamic considerations. 2) The spectrum of the gravity waves given by geometric considerations and computer simulations.
      Orateur: M. Thomas Konstandin (CERN)
      Slides
    • 17:15 17:35
      The MSSM with GUT-scale degenerate Higgs masses 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      An interesting class of UV completions of the MSSM gives rise to a specific structure of the Higgs mass matrix. Namely, in such models the diagonal and off-diagonal Higgs mass parameters are degenerate at the GUT scale. We explain the origins of this structure from higher dimensions, and we discuss some examples. We also present a numerical study of the phenomenological prospects of such models: By imposing Higgs mass degeneracy as a GUT-scale boundary condition for the RG evolution of the MSSM parameters, we can confront the emerging low-energy phenomenology with present experimental constraints.
      Orateur: Dr Felix Bruemmer (IPPP Durham)
      Slides
    • 09:00 09:20
      Gravitino Dark matter and BBN 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Supersymmetry is an elegant extension of the standard model that presents many interesting features such as interesting candidates for dark matter. I will focus on the case of a stable gravitino as the lightest supersymmetric particle (LSP). Models with a gravitino LSP can also solve the lithium problems linked to big bang nucelosynthesis (BBN). Predicted abundances in the standard description of BBN are incompatible with observations. If the decay of the next to lightest supersymmetric particle into the gravitino occurs during BBN, the lithium problems can be solved.
      Orateur: M. Sean Bailly (LAPTH)
      Slides
    • 09:20 09:40
      A Dark Matter candidate from Lorentz Invariance in 6 Dimensions 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      I will present the unique 6 dimensional orbifold with chiral fermions where a stable dark matter candidate is present due to Lorentz invariance on the orbifold, with no additional discrete symmetries imposed by hand. We propose a model of Universal Extra Dimensions where a scalar photon of few hundred GeV is a good candidate for dark matter. The spectrum of the model is characteristic of the geometry, and it has clear distinctive features for the LHC phenomenology compared to previous models of Kaluza-Klein dark matter.
      Orateur: M. Jérémie Llodra-Perez (IPNL)
      Slides
    • 09:40 10:00
      One-loop relic density with gauge pair production 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      With the increasing accuracy of forthcoming experiments (like PLANCK), on the theoretical side a high level of precision is also needed, therefore cross sections need to be evaluated at least at NLO. This has been applied to the calculation of the relic density of dark matter with gauge boson pair production with the help of the automatic program SloopS.
      Orateur: M. Guillaume Chalons (LAPTH)
      Slides
    • 10:00 10:20
      SUSY GUTs with Yukawa Unification in the light of data 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      After a short overview of the hypothesis of Yukawa Unification within SUSY GUTs, I report on its viability in the light of the predictions for quark masses, EW precision data and FCNC processes. In particular, I discuss the phenomenological difficulties existing when universalities for the soft SUSY-breaking terms at the GUT scale are assumed, and how these difficulties can be overcome in simple and robustly motivated scenarios of non-universalities. Finally, I discuss the falsifiability of the latter scenarios at forthcoming experiments, primarily the LHC.
      Orateur: Dr Diego Guadagnoli (TU Munich)
      Slides
    • 10:20 10:50
      Coffee break 30m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
    • 10:50 11:35
      Direct detection review (Edelweiss, CDMS, Xenon) 45m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
    • 11:35 11:55
      A stable dark matter candidate and grand unification without supersymmetry 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Orateur: Dr Michele Frigerio (SPhT, CEA-Saclay)
      Slides
    • 11:55 12:15
      Dark matter in cosmic ray electrons and positrons 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      1 year after the "PAMELA buzz", I will make a status on the search for dark matter signatures in cosmic ray spectra, focusing on electrons and positrons.
      Orateur: Dr Julien Lavalle (University of Torino)
    • 12:15 13:45
      déjeuner 1h 30m Restaurant Domus

      Restaurant Domus

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
    • 14:00 14:45
      Gravitational waves from cosmological phase transitions 45m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Cosmology is to some extent a search for 'relics' of earlier phases of the Universe. A famous example of this is the is the cosmic microwave background. Another observational signature which would allow us to probe even earlier epochs of the Universe is a background of gravitational waves. In my talk I discuss the characteristics of the gravitational wave background we might expect from a first order phase transition in the early Universe and I outline the prospects of its observation.
      Orateur: Prof. Ruth Durrer (Université de Genève)
      Slides
    • 14:45 15:05
      Constraining dark matter scenarios with CMB 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      I will show how it is possible to use CMB observables to put constraints in different types of DM parameter space. In the case of self-annihilating DM the constraints are particularly strong, competitive with local, multimessenger ones. This method offers the advantage to get rid of astrophysical uncertainties and rely only on cosmological quantities and might have interesting consequences on our understanding of high redshift Universe as well.
      Orateur: Dr Fabio Iocco (IAP - IPhT, CEA/Saclay)
      Slides
    • 15:05 15:25
      Neutrino mass hierarchy in the double seesaw model 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Orateur: Dr Carla Biggio (Max Planck Institut fur Physik, Munich)
      Slides
    • 15:25 15:45
      Minimal SUSY Inverse Seesaw 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Orateur: Dr Albert Villanova del Moral (LPTA Montpellier)
      Slides
    • 15:45 16:15
      coffee break 30m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
    • 16:15 16:35
      Turbulence and Supernova Neutrinos 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      It has long been feared that the presence of turbulence in supernovae would erase the characteristic features in the neutrino signal of the next Galactic supernova that would have allowed us to determine fundamental properties of the neutrino and observe the explosion while it is still deep in the star. We examine the effect of turbulence upon the neutrinos and find that the damage to the signal is not as great as feared and that turbulence might also leave its own characteristic fingerprints in unexpected places.
      Orateur: Dr James KNELLER (IPNO)
      Slides
    • 16:35 16:55
      Direct Photon Production In Association With A Heavy Quark Jet at Hadron and Ion Colliders 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      The associated production of direct photons and heavy quarks probes the gluon and heavy quark PDFs. As such this process can be used to constrain those nPDFs and to distinguish between different nPDFs sets. Predictions for hadron and ion colliders (ALICE, RHIC) are shown.
      Orateur: Dr Tzvetalina Stavreva (Florida State University/LPSC)
      Slides
    • 16:55 17:55
      Table ronde 1h Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
    • 19:30 22:00
      diner 2h 30m Brasserie Georges (Brasserie Georges)

      Brasserie Georges

      Brasserie Georges

    • 09:00 09:45
      Lepton flavour violation 45m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Flavour violating processes are indirect probes of physics beyond the Standard Model, and are complementary to direct collider searches. In this talk, I will discuss lepton flavour violation in supersymmetric models, focusing on the possibility of disentangling various high-energy scenarios through correlations between different processes.
      Orateur: Dr Stéphane Lavignac (SPhT Saclay)
      Slides
    • 09:45 10:05
      CP violation beyond the MSSM 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Orateur: Dr Cédric Delaunay (Weizmann Institute of Science)
      Slides
    • 10:05 10:25
      Le régime de saturation de QCD mis en évidence à RHIC avec les nouvelles données d+Au 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Orateur: Dr Cyrille Marquet (IPhT - CEA/Saclay)
      Slides
    • 10:25 10:55
      coffee break 30m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
    • 10:55 11:40
      Monopoles, Anomalies, and Electroweak Symmetry Breaking 45m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      I discuss how to formulate a low-energy theory of chiral monopoles and how monopoles can give rise to electroweak symmetry breaking and a sufficiently large top quark mass.
      Orateur: Prof. John Terning (UC Davis/CERN)
      Slides
    • 11:40 12:00
      Inflation from Phase Transitions in Scalar-Tensor theories 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Inflation with tunneling from a false to a true vacuum is viable in the presence of a non-minimally coupled scalar field. As a by-product this field also sets dynamically the value of the Planck mass, which can be exponentially large. Therefore along with Inflation we also suggest a natural dynamical explanation for why gravity is so weak today. Moreover we predict a spectrum of gravity waves peaked at around 0.1 mHz, that will be detectable by the planned space inteferometer LISA and we discuss interesting predictions on cosmological scalar and tensor fluctuations in the CMB. Finally we discuss possible ways of making the additional scalar compatible with late-time constraints.
      Orateur: Dr Alessio Notari (University of Heidelberg)
      Slides
    • 12:00 12:20
      NLO corrections to ee->gt;WWZ and ee->gt;ZZZ 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Orateur: M. Hao Sun (LAPTH)
      Slides
    • 12:20 13:50
      déjeuner 1h 30m Restaurant Domus

      Restaurant Domus

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
    • 14:00 14:20
      Decoherence and thermalization in quantum field theory 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Orateur: Julien Serreau (APC, University Paris 7)
      Slides
    • 14:20 14:40
      La dualité AdS/CFT et le secteur scalaire de QCD 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Les fonctions de corrélation des opérateurs associés aux boules de glu et aux mésons scalaires sont étudiées dans le cadre de la correspondance AdS/CFT. En particulier, les masses, les constantes de désintégration aussi bien que des constantes de couplage et des valeurs de condensats sont calculées et comparées avec leurs estimations dans QCD.
      Orateur: Dr Frédéric Jugeau (IHEP)
      Paper
    • 14:40 15:00
      Etude du contenu mésonique des protons via les processus exclusifs durs vers l'arrière 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Je discuterai les possibilités offertes par l'étude de processus exclusifs durs dans le régime arrière, tels que, d'une part, la diffusion Compton profondément virtuelle et l'électroproduction de méson à JLAB et COMPASS, et, d'autre part, la production d'une paire dilepton-meson dans des annihilations proton-antiprotons à GSI-FAIR.
      Orateur: Dr Jean-Philippe Lansberg (Ecole Polytechnique- CPHT)
      Slides
    • 15:00 15:20
      Introduction du degré de liberté de spin dans les jets de quark 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Les modèles actuels de fragmentation de quark ne tiennent pas compte du degré de liberté de spin. Or celui-ci influe sur les distributions azymutales (effet Collins et jet-handedness) et même sur le pT carré moyen. Nous présenterons un modèle ultra-simplifié où le spin est pris en compte tout au long de la cascade de fragmentation.
      Orateur: Dr Xavier Artru (IPNL)
      Slides
    • 15:20 15:40
      Distributions inclusives des particles dans les jets dans le vide et dans le milieu 20m Amphi Dirac

      Amphi Dirac

      IPN Lyon

      4, rue Enrico Fermi 69622 Villeurbanne Cedex France
      Orateur: Dr Redamy Perez (Universitat de Valencia IFIC-SCIC)
      Slides
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