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Hot Quarks 2014

21–27 Sept 2014
Europe/Madrid timezone

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Session

Session 2

22 Sept 2014, 17:00

Conveners

Session 2: Initial state II

  • Javier L Albacete (Universidad de Granada)

Presentation materials

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  1. 60. W boson studies in pPb and PbPb collisions with CMS
    Emilien Chapon (Ecole Polytechnique (FR))
    22/09/2014, 17:00
    Initial state effects and Color Glass Condensate
    Experimental
    The electroweak W bosons do not participate in the strong interaction, and thus constitute clean probes of the initial state of nuclear collisions. They provide a unique constraint on the nuclear parton distributions, in particular on the antiquarks from the sea. A first analysis of PbPb data has confirmed the medium-blind characteristic of the electroweak bosons. With the new pPb data,...
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  2. 57. Modelling jet quenching with Quenching Weights
    Mrs Carlota Andrés (Universidade de Santiago de Compostela)
    22/09/2014, 17:20
    Initial state effects and Color Glass Condensate
    Theory
    We present a phenomenological study of the single- and double-inclusive suppression data of high-pT particles in central Pb-Pb collisions at LHC. The analysis is based on quenching weights for medium-induced gluon radiation computed in the multiple soft scattering approximation and embedded in a hydrodynamic description of the bulk medium.
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  3. 22. High pT probes of proton-lead collisions with the ATLAS detector
    Dennis Vadimovich Perepelitsa (Brookhaven National Laboratory (US))
    22/09/2014, 17:40
    Jets in the vacuum and in the medium
    Experimental
    Measurements of high pT processes in ultrarelativistic proton-nucleus collisions are sensitive to changes in the partonic densities arising from the presence of the high-density nuclear environment. Additionally, such measurements serve as a benchmark of the so called "cold nuclear matter" effects, providing the context within which to understand the strong suppression of high pT processes...
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  4. 52. Study of Z boson production in pp, pPb and PbPb collisions in CMS
    Anna Zsigmond (Wigner RCP, Budapest (HU))
    22/09/2014, 18:25
    Initial state effects and Color Glass Condensate
    Experimental
    The Z boson is a new probe of ultra-relativistic heavy-ion collisions, which became accessible at the LHC energies. Unambiguously detected when decaying in the dilepton channel, it can help to constrain nuclear parton distribution functions, it can serve as a standard candle for initial state effects, and it represents an in-situ probe for binary scaling in the final state of the collisions....
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  5. 56. The impact of the LHC nuclear program on nPDFs
    Dr Maria Zurita (Universidade de Santiago de Compostela)
    22/09/2014, 18:45
    Initial state effects and Color Glass Condensate
    Theory
    One of the goals of the proton-lead run at the LHC is to produce a benchmark for heavy-ion collisions. Preliminary analyzes hint that nPDFs fail to give a proper description for certain observables. Here we present a full study of the compatibility between current sets of initial state nuclear distributions and data from the LHC p-Pb run. By means of the Hessian reweighting technique we give a...
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  6. 67. Quantized fermions in semi-classical Yang-Mills evolution
    maximilian attems (U)
    22/09/2014, 19:05
    Initial state effects and Color Glass Condensate
    Theory
    The “standard model” of relativistic heavy-ion collisions describes the early stage of an hadronic collission by the Color Glass Condensate. The studies of anisotropically expanding plasmas show that non-Abelian plasmas isotropize fast enough thanks to the Chromo-Weibel instability. Recent work involves the novel incorporation of quantized fermions in the semi-classical Yang-Mills evolution.
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