Energy and system size dependence of charged particle elliptic flow and $v_2/\eps$ scaling

Details Energy and system size dependence of charged particle elliptic flow and $v_2/\eps$ scaling Energy and system size dependence of charged particle elliptic flow and $v_2/\eps$ scaling

2007-01-22

arxiv.org/abs/nucl-ex/0701038v1

J.Phys.G34:S883-886,2007

Physics

Nuclear Physics

Nuclear Experiment

4 pages, Quark Matter 2006 proceedings

Scientific paper

10.1088/0954-3899/34/8/S118

We report measurements of charged particle elliptic flow %($v_2$) at mid-rapidity in Au+Au and Cu+Cu collisions at $\sqrt{s_{_{NN}}}=62$ and 200 GeV. Using correlations between main STAR TPC and Forward TPCs ensures minimal bias due to non-flow effects. We further investigate the effect of flow fluctuations on $v_2/\eps$ scaling studying initial geometry eccentricity fluctuations in Monte-Carlo Glauber model, consistent with STAR direct measurements of elliptic flow fluctuations. It is found that accounting for the effect of flow fluctuations improves $v_2/\eps$ scaling.

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