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arXiv · 0711.3366

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

J. Bleibel·G. Burau·C. Fuchs
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Abstract

We present predictions for the pseudorapidity dependence of the azimuthal anisotropy parameters v_1 and v_2 of baryons and inclusive charged hadrons in Pb+Pb collisions at a LHC energy of sqrt(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(eta) at RHIC, the directed flow of charged hadrons shows a small normal flow alignment. The elliptic flow v_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.

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J. Bleibel, G. Burau, C. Fuchs. 2007-11-21. Anisotropic flow in Pb+Pb collisions at LHC from the quark gluon string model with parton rearrangement. https://doi.org/10.1016/j.physletb.2007.11.042

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