Anisotropic flow in Pb plus Pb collisions at LHC from the quark-gluon string model with parton rearrangement

被引：17
|
作者：
Bleibel, J. [1 ]
Burau, G. [2 ]
Fuchs, C. [1 ]
机构：
[1] Univ Tubingen, Inst Theoret Phys, D-72076 Tubingen, Germany
[2] Goethe Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany
来源：
PHYSICS LETTERS B | 2008年 / 659卷 / 03期
关键词：
ultra-relativistic heavy ion collisions; microscopic quark-gluon string transport model; directed and elliptic flow; pseudorapidity and centrality dependence; recombination of partons;
D O I：
10.1016/j.physletb.2007.11.042
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present predictions for the pseudorapidity dependence of the azimuthal anisotropy parameters nu(1) and nu(2) of baryons and inclusive charged hadrons in Pb + Pb collisions at a LHC energy of,,root(NN)-N-S = 5.5 TeV applying a microscopic transport model, namely the quark-gluon string model (QGSM) which has been recently extended for parton rearrangement and fusion processes. Pb + Pb collisions with impact parameters b = 2.3 fm and b = 8 fm have been simulated in order to investigate additionally the difference between central and semiperipheral configurations. In contrast to V-1(ch)(eta) at RHIC, the directed flow of charged hadrons shows a small normal flow alignment. The elliptic flow nu(ch)(2)(eta) turns out to be rather similar in shape for RHIC and LHC conditions, the magnitude however increases about 10-20% at the LHC, leading to the conclusion that the hydrodynamical limit will be reached. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：520 / 524
页数：5
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