Bulletin of the American Physical Society
2011 Fall Meeting of the APS Division of Nuclear Physics
Volume 56, Number 12
Wednesday–Saturday, October 26–29, 2011; East Lansing, Michigan
Session MB: First Results from Heavy-Ions at LHC |
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Chair: Richard Seto, University of California, Riverside Room: Auditorium |
Saturday, October 29, 2011 8:30AM - 9:06AM |
MB.00001: Recent Heavy Ion results from the ATLAS detector at the LHC Invited Speaker: Peter Steinberg A broad program of measurements using heavy ion collisions is underway in ATLAS, with the aim of studying the properties of QCD matter at high temperatures and densities. This talk describes measurements performed using up to 9 $\mu$b-1 of lead- lead collision data provided at a nucleon-nucleon center-of-mass energy of 2.76 GeV by the Large Hadron Collider and collected by the ATLAS Detector during November and December 2010. We will be presenting results on inclusive charged particle multiplicities and elliptic flow to study the global features of the collisions as a function of centrality, pseudorapidity and transverse energy. Higher order Fourier coefficients will also be shown to assess the importance of more complicated event-wise geometric fluctuations. The study of the microscopic properties of the system will be addressed with high pT probes. Muon measurements provide access to W and Z bosons which are potentially sensitive to modifications of the nuclear PDFs, as well as heavy flavor. Charged particle spectra, particularly at high pT, are sensitive to the overall suppression of jets and their modified fragmentation. Finally, jet rates, asymmetries and fragmentation properties offer a more direct look at the physics of jet quenching than has been available at previous facilities. [Preview Abstract] |
Saturday, October 29, 2011 9:06AM - 9:42AM |
MB.00002: ALICE results from the first Pb-Pb run at the LHC Invited Speaker: Constantin Loizides ALICE (A Large Ion Collider Experiment) is a general-purpose detector specifically designed to measure the properties of strongly-interacting matter created in nucleus-nucleus collisions at the LHC. Results from the first LHC Pb-Pb run at center-of-mass energy of 2.76 TeV per nucleon pair will be presented, and discussed in the context of pp collisions at the same center-of-mass energy and of nucleus-nucleus collisions at lower energies. [Preview Abstract] |
Saturday, October 29, 2011 9:42AM - 10:18AM |
MB.00003: Overview of Pb+Pb results from CMS Invited Speaker: Gunther Roland We will present an overview of CMS results on Pb+Pb collisions and p+p reference data at sqrt(s) = 2.76 TeV. In addition to results on quarkonimum suppression, the talk will in particular focus on long-range azimuthal correlations observed in p+p and Pb+Pb collisions and their connection to hydrodynamic flow and on measurements related to parton propagation in the QCD medium. For the latter topic, measurements of charged hadron and photon momentum distributions, as well as detailed studies of dijet final states will be discussed. [Preview Abstract] |
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