Centrality dependence of elliptic flow and QGP viscosity

Details Centrality dependence of elliptic flow and QGP viscosity Centrality dependence of elliptic flow and QGP viscosity

2009-10-06

arxiv.org/abs/0910.0979v3

Physics

Nuclear Physics

Nuclear Theory

Final version to be publiashed in J. Phys. G. 8 pages, 6 figures and 3 tables

Scientific paper

In the Israel-Stewart's theory of second order hydrodynamics, we have analysed the recent PHENIX data on charged particles elliptic flow in Au+Au collisions. PHENIX data demand more viscous fluid in peripheral collisions than in central collisions. Over a broad range of collision centrality (0-10%- 50-60%), viscosity to entropy ratio ($\eta/s$) varies between 0-0.17.

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