Centrality dependence of elliptic flow and QGP viscosity
classification
⚛️ nucl-th
hep-ph
keywords
collisionscentralitydataellipticflowphenixviscosityanalysed
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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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