ATLAS Top Quark Physics Workshop

22 abr. 2009 8:00 → 24 abr. 2009 18:00 Europe/Madrid

IFIC (CSIC-UV)

Descripción

Title: Valencia-Coimbra ATLAS Top Quark Physics Workshop Description: ATLAS Top Quark Physics Workshop Community: ATLAS Meeting Access Information: 22-04-2009 - Meeting URL http://evo.caltech.edu/evoGate/koala.jnlp?meeting=e8eteDvMv9aeaaIaasI8 - Phone Bridge ID: 938381 23-04-2009 - Meeting URL http://evo.caltech.edu/evoGate/koala.jnlp?meeting=e9eIeivBv8alasItaaI9 - Phone Bridge ID: 938392 24-04-2009 - Meeting URL http://evo.caltech.edu/evoGate/koala.jnlp?meeting=eseieIvvvaa2aIIta8Is - Phone Bridge ID: 938404

miércoles, 22 abril
- 9:50 → 10:00
  
  Welcome and introduction.
  
  slides
- 10:00 → 14:00
  Standard Model Top Quark Physics : Mtop and top pair reconstruction.
  - 10:00
    
    "Physics Topics in ATLAS" 1h
    
    Ponente: Rajaa Cherkaoui (ATLAS-Morocco)
    
    Slides
  - 11:00
    
    "Top quark mass reconstruction in the semi-leptonic channel using the GlobalChi2 algorithm (I) " 30m
    
    Ponente: Sra. Maria Moreno Llacer (IFIC (CSIC-UV))
    
    Slides
  - 11:30
    
    "Top quark mass reconstruction in the semi-leptonic channel using the GlobalChi2 algorithm (II) " 30m
    
    Ponente: Sr. Carlos Escobar (Instituto de Fisica Corpuscular (IFIC) UV-CSIC)
    
    Slides
- 15:30 → 17:00
  
  Offline discussion on analysis tools for Top Quark analyses @ sqrt(s)=10 TeV and releases >=14.x.x
jueves, 23 abril
- 10:30 → 12:00
  
  Top quark physics Beyond the Standard Model: charge asymmetries in tt-bar production and axigluon signatures
  
  slides
- 15:30 → 17:30
  Top quark physics Beyond the Standard Model: W polarization and anomalous couplings in Top quark decays
  - 15:30
    
    Study of ATLAS sensitivity to Wtb anomalous couplings 30m
    
    Ponente: Nuno Castro (Universidad de Granada / LIP)
    
    Slides
viernes, 24 abril
- 10:00 → 12:00
  Top quark physics Beyond the Standard Model: exotic scenarios with Top quark resonances and high pT Top quarks
  
  slides
  - 10:00
    
    ATLAS Little Higgs Analysis Status at IFIC 20m
    
    Ponente: Elena Oliver García (IFIC)
    
    Slides
  - 10:30
    
    Twin Higgs from Left-Right Symmetry. Study of channel WH->Tb 20m
    
    Ponente: Sr. Miguel Villaplana (IFIC)
    
    Slides
- 12:00 → 13:00
  Top quark physics Beyond the Standard Model: tt-bar signatures with tau leptons and charge Higgs bosons
  - 12:00
    
    ttbar studies in the dilepton channel with tau lepton 30m
    
    Ponente: Teresa Perez (IFIC-CSIC)
    
    Slides
- 13:00 → 13:30
  Conclusions, final remarks, action items.
  - 13:00
    
    Minutes 20m
    
    Actas
    
    Ponente: Srta. Susana Cabrera Urbán (IFIC-CSIC)
    
    Dear colleagues, this is a summary of our discussions in the last 3 days, conclusions and action items. --------------------------------------------------------------------------------------------------------------------------------------------------- 1) On analysis tools: 1.1) To develop, share and maintain a flexible code to interface your C++ analysis with the DnPD in several formats (Ej: TopDPDMaker produced "a la TopView" ntuples, ARATopQuarkAnalysis, SingleTopDPDMaker..etc). This code will be compile together with the rest of your analysis and linked with ROOT. This code will build arrays of objects, instances of "extended class TLorentz vectors" in which to dump the collection of physics objects (electrons, muons, jets,taus,bjets..) and it will allow to do user dependent overlap removal and preselection. 1.2) To develop,share and maintain complementary strategies to submit analysis jobs into the GRID: WITH & WITHOUT GANGA. 1.3) To develop and share a common list of samples for Top quark physics. (It will allow to optimize the use of available GRID resources in the common cloud) --------------------------------------------------------------------------------------------------------------------------------------------------- 2) Preselection of physics objects: we need to work in close contact with performance groups. --------------------------------------------------------------------------------------------------------------------------------------------------- 3) On analysis schedule: New studies are encourage by June 2009 to be presented in the ATLAS collaboration in order to be shown outside in summer conferences. This feasibility studies should focuse on evaluating the ATLAS sensitivity at 10 TeV assuming Lint=200-300 pb-1. Several issues were identified that will allow a future collaboration among several groups involving theoreticians and experimentalists at the network: 3.1) The measurement and theoretical understanding of the M(tt-bar) differential cross section. The search for tt-bar resonances is also important at 10 TeV. 3.2) The W polarization measurements using tau leptons: these studies have never been done at ATLAS. The tau identification is also crucial for ATLAS and for the Top group. It has been proposed that Teresa and Susana will contact Ivo and Gustaaf to bring their tau expertise to the newly created Top Reconstruction group. --------------------------------------------------------------------------------------------------------------------------------------------------- Thanks a lot for your participation !

ATLAS Top Quark Physics Workshop

IFIC (CSIC-UV)

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