Probe the QCD phase boundary with elliptic flow in relativistic heavy ion collisions at STAR

Details Probe the QCD phase boundary with elliptic flow in relativistic heavy ion collisions at STAR Probe the QCD phase boundary with elliptic flow in relativistic heavy ion collisions at STAR

2012-01-19

arxiv.org/abs/1201.3959v1

Physics

Nuclear Physics

Nuclear Experiment

5 pages, 3 figures, the proceedings of the 7th International Workshop on Critical Point and Onset of Deconfinement (CPOD2011)

Scientific paper

We present measurement of elliptic flow, $v_2$, for charged and identified particles at midrapidity in Au+Au collisions at $\sqrt{s_{NN}}$ = 7.7 - 39 GeV. We compare the inclusive charged hadron $v_2$ to those from transport model calculations, such as UrQMD model, AMPT default model and AMPT string-melting model. We discuss the energy dependence of the difference in $v_2$ between particles and anti-particles. The $v_2$ of $\phi$ meson is observed to be systematically lower than other particles in Au+Au collisions at $\sqrt{s_{NN}}$ = 11.5 GeV.

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