Measurement of the centrality and pseudorapidity dependence of the integrated elliptic flow in lead-lead collisions at $\sqrt{s_{\mathrm {NN}}}=2.76$ TeV with the ATLAS detector

Aad, Georges; Abbott, Brad; Abdallah, Jalal; Abdel Khalek, Samah; Abdinov, Ovsat; Aben, Rosemarie; Abi, Babak; Abolins, Maris; AbouZeid, Ossama; Abramowicz, Halina

doi:10.1140/epjc/s10052-014-2982-4

Measurement of the centrality and pseudorapidity dependence of the integrated elliptic flow in lead-lead collisions at $\sqrt{s_{\mathrm {NN}}}=2.76$ TeV with the ATLAS detector

ATLAS

Collaboration

May 15, 2014

25 pages

Published in:

Eur.Phys.J.C 74 (2014) 8, 2982

Published: Aug 13, 2014

e-Print:

1405.3936 [hep-ex]

DOI:

10.1140/epjc/s10052-014-2982-4

Report number:

CERN-PH-EP-2014-065

Experiments:

CERN-LHC-ATLAS

View in:

datasets

reference search46 citations

Citations per year

Abstract: (Springer)

The integrated elliptic flow of charged particles produced in Pb+Pb collisions at

\sqrt{{s}_{\mathrm {NN}}}=2.76

TeV has been measured with the ATLAS detector using data collected at the Large Hadron Collider. The anisotropy parameter,

v_2

, was measured in the pseudorapidity range

|\eta |\le 2.5

with the event-plane method. In order to include tracks with very low transverse momentum

p_{\mathrm {T}}

, thus reducing the uncertainty in

v_2

integrated over

p_{\mathrm {T}}

, a

1~\mu \hbox {b}^{-1}

data sample recorded without a magnetic field in the tracking detectors is used. The centrality dependence of the integrated

v_2

is compared to other measurements obtained with higher

p_{\mathrm {T}}

thresholds. The integrated elliptic flow is weakly decreasing with

|\eta |

. The integrated

v_2

transformed to the rest frame of one of the colliding nuclei is compared to the lower-energy RHIC data.

Note:

21 pages (30 including author list), 24 figures, submitted to EPJC, all figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2012-06

charged particle: elliptic flow
transverse momentum
rapidity dependence
ATLAS
Brookhaven RHIC Coll
impact parameter: dependence
CERN LHC Coll
anisotropy
track data analysis
heavy ion: scattering

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Measurement of the centrality and pseudorapidity dependence of the integrated elliptic flow in lead-lead collisions at sNN=2.76\sqrt{s_{\mathrm {NN}}}=2.76sNN​​=2.76 TeV with the ATLAS detector

Citations per year

Measurement of the centrality and pseudorapidity dependence of the integrated elliptic flow in lead-lead collisions at $\sqrt{s_{\mathrm {NN}}}=2.76$ TeV with the ATLAS detector