Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/101676
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Type: Journal article
Title: Measurement of the pseudorapidity and transverse momentum dependence of the elliptic flow of charged particles in lead–lead collisions at √sNN = 2.76 TeV with the ATLAS detector
Other Titles: Measurement of the pseudorapidity and transverse momentum dependence of the elliptic flow of charged particles in lead-lead collisions at root sNN = 2.76 TeV with the ATLAS detector
Author: Aad, G.
ATLAS Collaboration
Citation: Physics Letters B, 2012; 707(3-4):330-348
Publisher: Elsevier
Issue Date: 2012
ISSN: 0370-2693
Statement of
Responsibility: 
G. Aad ... P. Jackson ... L. Lee ... A. Petridis ... N. Soni ... M.J. White ... et al. (ATLAS Collaboration)
Abstract: This Letter describes the measurement of elliptic flow of charged particles in lead–lead collisions at √sNN = 2.76 TeV using the ATLAS detector at the Large Hadron Collider (LHC). The results are based on an integrated luminosity of approximately 7 μb⁻¹. Elliptic flow is measured over a wide region in pseudorapidity, |η| < 2.5, and over a broad range in transverse momentum, 0.5 < pτ < 20 GeV. The elliptic flow parameter v₂ is obtained by correlating individual tracks with the event plane measured using energy deposited in the forward calorimeters. As a function of transverse momentum, v₂(pτ) reaches a maximum at pτ of about 3 GeV, then decreases and becomes weakly dependent on pτ above 7–8 GeV. Over the measured pseudorapidity region, v₂ is found to be only weakly dependent on η, with less variation than observed at lower beam energies. The results are discussed in the context of previous measurements at lower collision energies, as well as recent results from the LHC.
Keywords: LHC; ATLAS; Heavy ions; Elliptic flow
Rights: © 2011 CERN. Published by Elsevier B.V. This article is published Open Access at sciencedirect.com. It is distributed under the terms of the Creative Commons Attribution License 3.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are credited.
RMID: 0020132924
DOI: 10.1016/j.physletb.2011.12.056
Appears in Collections:Physics publications

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