CERN Accelerating science

Article
Report number arXiv:1108.6018 ; CERN-PH-EP-2011-124 ; CERN-PH-EP-2011-124
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
Related titleMeasurement of the pseudorapidity and transverse momentum dependence of the elliptic flow of charged particles in lead-lead collisions at sqrt(s_NN) = 2.76 TeV with the ATLAS detector
Author(s) ATLAS Collaboration  3031 人のオーサーを表示
Publication 2013-07-16
Imprint 06 Sep 2011
Number of pages 19
Note Comments: 16 pages plus author list (39 pages total), 6 figures, 1 table, submitted to Physics Letters B
16 pages plus author list (39 pages total), 6 figures, 1 table, final version published in Physics Letters B
In: Phys. Lett. B 707 (2012) 330-348
DOI 10.1016/j.physletb.2011.12.056
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords relativistic heavy ion physics ; quark gluon plasma ; experimental results
Abstract This paper describes the measurement of elliptic flow of charged particles in lead-lead collisions at sqrt(s_NN) = 2.76 TeV using the ATLAS detector at the Large Hadron Collider (LHC). The results are based on an integrated luminosity of approximately 7 ub^-1. Elliptic flow is measured over a wide region in pseudorapidity, |eta| < 2.5, and over a broad range in transverse momentum, 0.5 < p_T < 20 GeV. The elliptic flow parameter v_2 is obtained by correlating individual tracks with the event plane measured using energy deposited in the forward calorimeters. As a function of transverse momentum, v_2(p_T) reaches a maximum at p_T of about 3 GeV, then decreases and becomes weakly dependent on p_T above 7 - 8 GeV. Over the measured pseudorapidity region, v_2 is found to be approximately independent of |eta| for all collision centralities and particle transverse momenta, something not observed in lower energy collisions. The results are discussed in the context of previous measurements at lower collision energies, as well as recent results from the LHC.
Copyright/License publication: © 2012-2025 CERN (License: CC-BY-3.0)
preprint: © 2011-2025 CERN (License: CC-BY-3.0)



Corresponding record in: Inspire
Email contact: klaus.moenig@cern.ch


 レコード 生成: 2011-09-06, 最終変更: 2024-02-16


Elsevier Open Access article:
Download fulltextPDF
フルテキスト:
Download fulltextPDF
External link:
Download fulltextall figures including auxiliary figures
  • Send to ScienceWise.info