Extracting the QGP viscosity from RHIC data -- a status report from viscous hydrodynamics

Details Extracting the QGP viscosity from RHIC data -- a status report from viscous hydrodynamics Extracting the QGP viscosity from RHIC data -- a status report from viscous hydrodynamics

2008-12-22

arxiv.org/abs/0812.4274v2

J.Phys.G36:064033,2009

Physics

Nuclear Physics

Nuclear Theory

8 pages, 3 figures, plenary talk at International Conference on Strangeness in Quark Matter 2008, Beijing, China, October 6-10

Scientific paper

10.1088/0954-3899/36/6/064033

We report recent progress on causal viscous hydrodynamics for relativistic heavy ion collisions. For fixed specific shear viscosity eta/s, uncertainties in the elliptic flow arising from initial conditions, equation of state, bulk viscosity and numerical viscosity, and the treatment of the highly viscous hadronic stage and freeze-out procedure are analysed. A comparison of current viscous hydrodynamic results with experimental data yields a robust upper limit eta/s < 5/(4pi).

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