2 2 O ct 2 00 8 Perturbative QCD Calculations of Elliptic Flow and Shear Viscosity in Au + Au Collisions at √ s NN = 200 GeV
نویسندگان
چکیده
The elliptic flow v2 and the ratio of the shear viscosity over the entropy density, η/s, of gluon matter are calculated from the perturbative QCD (pQCD) based parton cascade Boltzmann approach of multiparton scatterings. For Au+Au collisions at √ s = 200A GeV the gluon plasma generates large v2 values measured at the BNL Relativistic Heavy Ion Collider. Standard pQCD yields η/s ≈ 0.08 − 0.15 as small as the lower bound found from the anti-de Sitter/conformal field theory conjecture.
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