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TOP2011

25–30 Sept 2011
Sant Feliu de Guixols, Spain
Europe/Madrid timezone

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Contribution List

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  1. 0. Welcome
    26/09/2011, 09:00
  2. 1. Keynote
    Adrian Signer (IPPP)
    26/09/2011, 09:15
  3. 2. ATLAS status
    Sasa Fratina (University of Pennsylvania)
    26/09/2011, 09:45
  4. 3. CMS Status
    Kevin Lannon (University of Notre Dame)
    26/09/2011, 10:15
  5. 4. Top pair production at hadron colliders
    Peter Uwer (Humboldt-Universität zu Berlin)
    26/09/2011, 11:15
  6. 5. State-of-Art generators for top physics
    Emanuele Re (IPPP, Durham University)
    26/09/2011, 11:45
  7. 6. Object ID performance for top (ATLAS)
    Ford Garberson (Yale University)
    26/09/2011, 12:15
  8. 7. Object ID performance for top (CMS)
    Jason Slaunwhite (University of Notre Dame)
    26/09/2011, 12:45
  9. 8. V+light jets predictions (NLO and MC)
    Daniel Maitre (CERN/IPPP Durham)
    26/09/2011, 15:00
  10. 9. V+heavy-flavor jets predictions (NLO and MC)
    Rikkert Frederix (University of Zurich)
    26/09/2011, 15:30
  11. 10. Comparison of predictions and experimental measurements for V+jets (Tevatron and LHC)
    Pierluigi Catastini (Harvard University)
    26/09/2011, 16:00
  12. 11. Estimation techniques for instrumental backgrounds (Tevatron and LHC)
    Jörgen Sjölin (Stockholm University)
    26/09/2011, 16:30
  13. 12. ttbar cross section measurements (Tevatron)
    Pavol Bartos (Comenius University)
    26/09/2011, 17:30
  14. 13. ttbar cross section measurements (LJ/hadronic) LHC
    Jordi Nadal Serrano (IFAE)
    26/09/2011, 18:00
  15. 14. ttbar cross section measurements (dileptons/other) LHC
    Joanne Cole (Brunel University)
    26/09/2011, 18:30
  16. 15. Effective field theory for top physics
    Pyungwon Ko (Korea Institute for Advanced Study)
    27/09/2011, 09:00
  17. 16. Top differential cross section measurements (Tevatron)
    Andreas Jung (Fermilab)
    27/09/2011, 09:30
  18. 18. New physics in top production
    Geraldine Servant (CERN)
    27/09/2011, 11:00
  19. 19. ttbar resonances (Tevatron)
    Veronique Boisvert (Royal Holloway, University of London)
    27/09/2011, 11:40
  20. 20. ttbar resonances (LHC)
    Lucia Masetti (Johannes Gutenberg Universität)
    27/09/2011, 12:20
  21. 21. Exotic heavy quarks
    Bob Holdom (University of Toronto)
    27/09/2011, 15:00
  22. 22. Exotic heavy quark searches (Tevatron)
    Un-Ki Yang (University of Manchester)
    27/09/2011, 15:30
  23. 23. Exotic heavy quark searches (LHC)
    Erkcan Ozcan (Bogazici University (TR))
    27/09/2011, 16:00
  24. 24. Constraints on BSM scenarios from ttbar resonances and HQ searches
    Cedric Delaunay (CERN)
    27/09/2011, 16:30
  25. 25. Boosted objects
    Michael Spannowsky (University of Durham)
    27/09/2011, 18:00
  26. 26. Boosted tops and top tagging
    Victor Eduardo Bazterra (University of Illinois at Chicago)
    27/09/2011, 18:40
  27. 27. Single top production at hadron colliders
    Patrick Motylinski (University of Freiburg)
    28/09/2011, 09:00
  28. 28. Single top (Tevatron)
    Cecilia Gerber (University of Illinois)
    28/09/2011, 09:40
  29. 29. Single top (LHC)
    Wolfgang Wagner (Bergische Universität)
    28/09/2011, 10:20
  30. 31. Top mass measurements (Tevatron)
    Mr Karolos Potamianos (Purdue University (US))
    28/09/2011, 11:30
  31. 32. Top mass measurements (LHC)
    Michele Gallinaro (LIP)
    28/09/2011, 12:00
  32. 33. Comparison of mass extraction techniques (Tevatron and LHC)
    Elizaveta Shabalina (University of Goettingen)
    28/09/2011, 12:30
  33. 38. Spin correlations
    Stephen Parke (FNAL)
    29/09/2011, 09:00
  34. 40. Spin correlations (LHC)
    Christian Schwanenberger (Machester University)
    29/09/2011, 09:30
  35. 39. Spin correlations (Tevatron)
    Alexander Grohsjean (DESY)
    29/09/2011, 10:00
  36. 34. W polarization and constraints on Wtb vertex (Tevatron)
    Cecile Deterre (CEA-Irfu)
    29/09/2011, 11:00
  37. 35. W polarization and constraints on Wtb vertex (LHC)
    Nuno Filipe Castro (LIP Laboratorio de Instrumentacao e Fisica Experimental de Part)
    29/09/2011, 11:30
  38. 36. Searches for rare/BSM top decays (Tevatron)
    Daniel Wicke (Bergische Universität)
    29/09/2011, 12:00
  39. 37. Searches for rare/BSM top decays (LHC)
    Allison Renae Mc Carn (Univ. Illinois at Urbana-Champaign (US))
    29/09/2011, 12:30
  40. 41. AFB/Charge asymmetry at Tevatron and LHC - theory
    Ben Pecjak (Mainz University)
    29/09/2011, 15:00
  41. 42. AFB at Tevatron
    Amnon Harel (University of Rochester)
    29/09/2011, 15:40
  42. 43. Charge asymmetry at LHC
    Thomas Peiffer (Inst. für Exp. Kernphysik)
    29/09/2011, 16:20
  43. 44. Overview of BSM scenarios consistent with Tevatron AFB
    Juan Antonio Aguilar-Saavedra (University of Granada)
    29/09/2011, 17:30
  44. 45. Searches for SS tops (LHC)
    Freya Blekman (Inter-University Institute for High Energies (BE))
    29/09/2011, 18:20
  45. 46. Prospects for BSM model descrimination
    Lian-Tao Wang (University of Chicago)
    29/09/2011, 18:50
  46. 47. Prospects for ttH (LHC)
    Sarah Allwood-Spiers (University of Glasgow)
    30/09/2011, 09:00
  47. 48. CP violation in top
    Jure Zupan (U. of Cincinnati/U. of Ljubljana)
    30/09/2011, 09:30
  48. 50. Tevatron legacy
    Yvonne Peters
    30/09/2011, 10:30
  49. 51. Prospects at LHC with 10/fb
    Andrea Giammanco (Universite Catholique de Louvain)
    30/09/2011, 11:10
  50. 52. Closing
    Roberto Tenchini (INFN)
    30/09/2011, 11:50
  51. 56. Chiral U(1) flavor models and flavored Higgs doublets: the top FB asymmetry and the Wjj
    Dr Chaehyun Yu (KIAS)
    We present U(1) flavor models for leptophobic Z' with flavor dependent couplings to the right-handed up-type quarks in the Standard Model, which can accommodate the recent data on the top forward-backward (FB) asymmetry and the dijet resonance associated with a W boson reported by CDF Collaboration. Such flavor-dependent leptophobic charge assignments generally require extra chiral...
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  52. 67. Combined measurement of the ttbar cross section and b tagging efficiency using mu+jets events with CMS
    Michael Maes (Inter-University Institute for High Energies (BE))
    The measurement of the top quark pair cross section at the LHC is important for diverse reasons. The measurement on its own is a test of the Standard Model as well as a benchmark for the theoretical calculations. This poster describes the combined measurement of the tt ̄ cross section, using b-tagging, and the b-tagging efficiency using the muon+jets event topology observed by the CMS...
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  53. 54. Differential cross section estimation by a matrix element based method.
    Mr arnaud Pin (Institut de Physique Nucleaire-Departement de Physique-Universi)
    In high energy collider physics, some topology cannot be fully reconstructed using the detector information only. Some techniques like kinematical fitting (KF) or matrix weighted template (MWT) have been developed to handle this difficulty. This is for instance the case for topologies arising from top quark pair production, when two leptons are present in the final state together with two...
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  54. 66. Extraction of the Top Quark Mass from Top Pair Cross Sections Measured by CMS at sqrt(s) = 7 TeV
    Maria Aldaya Martin (Deutsches Elektronen-Synchrotron (DE))
    The top quark mass in the pole and MSbar definition is determined based on the measured cross section in the dilepton channel compared to three different approximate NNLO QCD calculations. The analysed dataset corresponds to an integrated luminosity of 1.14 fb-1 collected by the CMS experiment in 2011 in pp collisions at sqrt(s) of 7 TeV.
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  55. 60. Inclusive search for a fourth generation of quarks
    Petra Van Mulders (Vrije Universiteit Brussel)
    We present a search for fourth generation chiral quarks of the up- and down-type in 7 TeV proton collisions recorded by the CMS experiment at the LHC. Final state topologies with b' and t' quarks produced singly or in pairs are studied in the 2011 data corresponding to an integrated luminosity of 1.1 fb^{-1}. Degenerate masses are assumed for the fourth generation quarks. The inclusive...
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  56. 57. Measurement of Normalized Differential Cross Sections in Semileptonic and Dileptonic Top Quark Pair Events at CMS
    Dr Thomas Hermanns (Hamburg University (DE))
    First normalized differential cross sections in top quark pair events are presented. All results are based on pp-collision data at a center-of-mass energy of 7 TeV recorded in 2011 by the CMS detector. The measurements are performed in the semileptonic and dileptonic decay modes of the top quark pair with events containing either one or two isolated leptons (electrons or muons), missing...
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  57. 64. Measurement of the charge asymmetry in top quark pair production in pp collisions at √s = 7 TeV using the ATLAS detector
    Maria Ilaria Besana (Torino)
    The measurement of the charge asymmetry in top quark pair production can be an important window on new physics, as in some Beyond Standard Model theories this asymmetry is significantly enhanced with respect to Standard Model prediction. The measurements performed by the ATLAS collaboration with pp collision data recorded in 2011 will be presented. The analysis has been performed in the...
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  58. 58. Measurement of the mass difference between top and antitop quarks with CMS
    Mr Stijn Blyweert (Vrije universiteit brussel)
    A measurement of the mass difference between the top quark and the antitop quark (∆mt = mt − mt ) is performed using events with a muon and at least four jets in the muon+jets final state. Data collected in 2011 with the CMS detector at the LHC and corresponding to an integrated luminosity of 1.09 fb−1 are analyzed. The measured value of ∆mt = −1.2 ± 1.2 (stat.) ± 0.5 (syst.) GeV is consistent...
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  59. 62. Measurement of the single top quark cross section in 0.70/fb of pp Collisions with the ATLAS detector
    Barbara Alvarez (Michigan State University)
    We present studies on the three single top production modes (s, t, Wt channels) carried out with 0.70/fb of integrated luminosity collected by the ATLAS detector during the 2011 LHC run. The t-channel production cross section is measured by two different techniques, a cut-based approach and a multivariate discriminant constructed with a neural network. The cut-based analysis combines 2- and...
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  60. 63. Measurement of the top quark pair production cross section in pp collisions at √s= 7 TeV in the µ + τ Channel with ATLAS
    Jacob Searcy (University of Oregon)
    We present a measurement of the tt production cross section with the ATLAS detector in proton-proton collisions at √s= 7 TeV, using events containing an isolated µ and a τ lepton decaying hadronically. The analysis utilizes a multivariate technique based on boosted decision trees to identify τ leptons. Backgrounds are measured using a method that combines charge subtraction and template...
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  61. 53. Poster Session
  62. 65. Search for charged Higgs bosons in ATLAS
    Patrick Czodrowski (Technische Universitaet Dresden)
    Charged Higgs bosons are predicted by various theories beyond the Standard Model, which include e.g. an additional Higgs doublet. In the low-mass range, charged Higgs bosons can be produced in the decay of top quarks via t -> bH+, where H+ may then decay into c+sbar or tau+nu. We report on searches for a charged Higgs boson in ATLAS using the LHC data for both decay channels.
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  63. 61. The measurement of the top quark charge in the ATLAS experiment
    Pavol Federic (Bratislava University)
    We present a measurement of the electric charge of the top quark in the lepton+jets final states using 0.70/fb of data accumulated in the ATLAS experiment at a center of mass energy of 7 TeV. The top quark charge measurement is based on reconstructing the charges of the top quark decay products. While we determined the charge of the W boson through its leptonic decay, the b-quark charge is not...
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  64. 30. Theoretical issues in top mass measurements at hadron colliders
  65. 17. Top differential cross section measurements (LHC)
    Tae Jeong Kim (Korea University)
  66. 55. Top quark phenomenology of the ADD model and the Minimal Length Scenario
    Mr Ken Mimasu (University of Southampton)
    We study top-(anti)quark pair production at the Tevatron and Large Hadron Collider (LHC) in the context of the Minimal Length Scenario (MLS) of the Arkani-Hamed, Dimopoulos and Dvali (ADD) model of extra dimensions (XDs). We show that sizable effects onto both the integrated and differential cross section due to graviton mediation are expected for a String scale, M_S, of O(1-10TeV) and several...
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  67. 49. Top-like new phenomena (LHC)
  68. 59. TTbar cross section measurement in the semi-leptonic electron and muon channels at CMS
    Sinéad Walsh (Ghent University (BE))
    We present a measurement of the top quark pair production cross section using CMS data collected in 2011 at a center-of-mass energy of 7TeV. The cross section measurement is performed in the semi-leptonic final state with events containing one lepton, either a muon or an electron, missing transverse energy and jets. The measured cross section is compared with higher order QCD calculations.
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