Pseudorapidity dependence of the anisotropic flow of charged particles in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76 $ TeV

J Adam , Łukasz Graczykowski , Monika Jakubowska , Małgorzata Janik , Adam Kisiel , Janusz Oleniacz , Jan Pluta , Adam Szczepankiewicz , Maciej Szymański , Anna Zaborowska , Hanna Zbroszczyk

Abstract

We present measurements of the elliptic (v2), triangular (v3) and quadrangular (v4) anisotropic azimuthal flow over a wide range of pseudorapidities (−3.5 <η<5). The measurements are performed with Pb–Pb collisions at √sNN=2.76TeVusing the ALICE detector at the Large Hadron Collider (LHC). The flow harmonics are obtained using two-and four-particle correlations from nine different centrality intervals covering central to peripheral collisions. We find that the shape of vn(η)is largely independent of centrality for the flow harmonics n =2–4, however the higher harmonics fall off more steeply with increasing |η|. We assess the validity of extended longitudinal scaling of v2by comparing to lower energy measurements, and find that the higher harmonic flow coefficients are proportional to the charged particle densities at larger pseudorapidities. Finally, we compare our measurements to both hydrodynamical and transport models, and find they both have challenges when it comes to describing our data.
Collective authorALICE Collaboration
Author J Adam
J Adam,,
-
, Łukasz Graczykowski ZFJ
Łukasz Graczykowski,,
- Nuclear Physics Division
, Monika Jakubowska ISEP
Monika Jakubowska,,
- The Institute of Control and Industrial Electronics
, Małgorzata Janik ZFJ
Małgorzata Janik,,
- Nuclear Physics Division
, Adam Kisiel ZFJ
Adam Kisiel,,
- Nuclear Physics Division
, Janusz Oleniacz ZFJ
Janusz Oleniacz,,
- Nuclear Physics Division
, Jan Pluta ZFJ
Jan Pluta,,
- Nuclear Physics Division
, Adam Szczepankiewicz II - European Organization for Nuclear Research Geneva Switzerland (CERN )
Adam Szczepankiewicz,,
- The Institute of Computer Science
, Maciej Szymański ZFJ
Maciej Szymański,,
- Nuclear Physics Division
, Anna Zaborowska ZFJ
Anna Zaborowska,,
- Nuclear Physics Division
et al.
Total number of authors1002
Journal seriesPhysics Letters B, ISSN 0370-2693
Issue year2016
Vol762
Pages376-388
Publication size in sheets0.6
DOIDOI:10.1016/j.physletb.2016.07.017
URL http://www.sciencedirect.com/science/article/pii/S0370269316303586
Languageen angielski
File
1-s2.0-S0370269316303586-main.pdf / 1.41 MB / 1-s2.0-S0370269316303586-main.pdf 1.41 MB
Score (nominal)40
ScoreMinisterial score = 35.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 4.807 (2) - 2016=4.327 (5)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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