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Nearly perfect fluid in Au+Au collisions at RHIC
Physics Letters B
In the Israel-Stewart's theory of dissipative hydrodynamics, we have analysed the STAR data on ϕ meson production in Au+Au collisions at √(s)=200 GeV. From a simultaneous fit to ϕ mesons multiplicity, mean p_T and integrated v_2, we obtain a phenomenological estimate of QGP viscosity, η/s =0.07 ± 0.03 ± 0.14, the first error is due to the experimental uncertainty in STAR measurements, the second reflects the uncertainties in initial and final conditions of the fluid.doi:10.1016/j.physletb.2009.10.068 fatcat:qducoybloffivc6uuqa4qle4uu