Azimuthal anisotropy of charged hadrons at very high p[subscript T] in PbPb collisions at 2.76 TeV with CMS
Name
Zhukova-2013-Azimuthal anisotropy.pdf
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188.51 KB
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Author(s)
Wyslouch, Victoria
Date Issued
May 2013
Journal
Nuclear Physics A
Publisher
Elsevier
Citation
Zhukova, Victoria. “Azimuthal Anisotropy of Charged Hadrons at Very High p[subscript T] in PbPb Collisions at 2.76 TeV with CMS.” Nuclear Physics A 904–905 (May 2013): 459c–462c. © CERN for the benefit of the CMS Collaboration
Version
Final published version
Abstract
Measurements of the azimuthal anisotropy of charged hadrons are presented for PbPb collisions at 2.76 TeV over an extended transverse momentum range up to approximately 60 GeV/c. The data were collected with the CMS detector at the LHC. Utilizing a novel and unique high-p[subscript T] single-track high-level trigger, the analysis explores the full 2011 PbPb data set corresponding to an integrated luminosity of 150μb[superscript −1]. Anisotropy parameters (v[subscript 2], v[subscript 3], and v[subscript 4]) are extracted by correlating charged tracks with the event plane reconstructed using the energy deposited in the forward calorimeters. The results presented in this talk significantly improve on the statistical precision of previous v[subscript 2] measurements for p[subscript T]>12 GeV/c, and explore for the first time the harmonic components of the azimuthal dependence in the very high p[subscript T] region beyond 20 GeV/c. These new data can impose quantitative constraints on the details of in-medium parton energy loss models, particularly the influence of the path length and the shape of the interaction region.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1016/j.nuclphysa.2013.02.048
