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    Phenomenology 2013 Symposium

    6–8 May 2013
    University of Pittsburgh
    US/Eastern timezone

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    Session

    SM

    6 May 2013, 16:30
    University of Pittsburgh

    University of Pittsburgh

    Pittsburgh, PA 15260

    Conveners

    SM

    • xiaohui liu (ANL)

    Presentation materials

    There are no materials yet.

    1. 181. Heavy-flavour production at central rapidity in pp collisions at the LHC with ALICE
      Hege Austrheim Erdal (Bergen University College (NO))
      06/05/2013, 16:30
      Standard Model Results
      parallel talk
      Heavy quarks (charm and beauty) are formed through hard partonic scatterings in hadronic collisions and, thus, serve as unique probes in particle and nuclear physics at high energy. Measurements of heavy-flavour production in proton-proton collisions at the LHC allow a precise test of perturbative quantum chromo dynamics (pQCD) in a previously unreached energy domain. They also serve as a...
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    2. 106. The NRQED Lagrangian at order 1/M^4
      Gabriel Lee (University of Chicago)
      06/05/2013, 16:45
      Standard Model Results
      parallel talk
      The parity and time-reversal invariant effective Lagrangian for a heavy fermion inter- acting with an Abelian gauge field, i.e., NRQED, is constructed through order 1/M4. The implementation of Lorentz invariance in the effective theory becomes nontrivial at this order, and a complete solution for Wilson coefficient constraints is obtained. Matching conditions in the one-fermion sector are...
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    3. 28. Theoretical motivations for measuring the ratios of W and Z cross sections at large boson transverse momentum
      Dr Sarah Malik (The Rockefeller University)
      06/05/2013, 17:00
      Standard Model Results
      parallel talk
      We motivate a measurement of various ratios of W and Z cross sections at the Large Hadron Collider at large values of the boson transverse momentum. We study the dependence of predictions for these cross-section ratios on the multiplicity of associated jets and the boson pT . We present a detailed study of the flavour decomposition of the initial-state partons and an evaluation of the...
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    4. 14. QCD and EW measurements in the forward region
      William James Barter (University of Cambridge (GB))
      06/05/2013, 17:15
      Standard Model Results
      parallel talk
      Due to its unique pseudorapidity coverage and the possibility of extending measurements to low transverse momenta, LHCb provides important input to the understanding of particle production in a kinematical range where models have large uncertainties. We report measurements of electroweak boson, strange and charmed particle production and energy flow in the forward region, using data collected...
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    5. 97. Recent electroweak results from ATLAS
      Steven Adam Kaneti (University of Cambridge (GB))
      06/05/2013, 17:30
      Standard Model Results
      parallel talk
      ATLAS measurements of diboson production processes involving combinations of W, Z and isolated photons are summarized. Measurements using data at 7 TeV as well as new results using data at 8 TeV are presented. The measurements are performed using leptonic decay modes, including the invisible decay of Z->nunu, as well as the semileptonic channels. Differential and total visible cross...
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    6. 54. ATLAS measurements of vector boson production
      Sergei Chekanov (Argonne National Laboratory (US))
      06/05/2013, 17:45
      Standard Model Results
      parallel talk
      Vector boson production in pp collisions at 7 TeV has been extensively studied by ATLAS. Recent results include the measurement of Drell-Yan differential production cross section and of jets and heavy flavours production in association with vector bosons. The Drell-Yan cross-section measurements are compared to NNLO QCD predictions corrected for NLO EW effects calculated using various PDF...
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    7. 185. Intermediate State Contributions to the Rare Decay D^0 to mu^+ mu^-
      Kristopher Healey (Wayne State University)
      06/05/2013, 18:00
      Standard Model Results
      parallel talk
      The current theoretical estimate of the di-lepton rare decay of the neutral D meson is dominated by a two-photon intermediate state. We re-analyze this result and discuss additional two-particle intermediate contributions and their effect on the standard model prediction.
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    8. 210. Jet counting and QCD scaling patterns
      Peter Schichtel (ITP)
      06/05/2013, 18:15
      The properties of multi-jet events impact many LHC analysis. The exclusive number of jets at hadron colliders can be described in terms of two simple patterns: staircase and Poisson scaling. We use the generating functional formalism at LL/NLL to describe multi-jet rates. We derive formally under which circumstances we expect either of the both scaling patterns. In photon plus jets production...
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