Estimation of shear viscosity based on transverse momentum correlations
Abstract
Event anisotropy measurements at RHIC suggest the strongly interacting matter created in heavy ion collisions flows with very little shear viscosity. Precise determination of "shear viscosity-to-entropy" ratio is currently a subject of extensive study. We present preliminary results of measurements of the evolution of transverse momentum correlation function with collision centrality of Au +Au interactions at sNN = 200 GeV. We compare two differential correlation functions, namely inclusive and a differential version of the correlation measure C introduced by Gavin et. al.. These observables can be used for the experimental study of the shear viscosity per unit entropy.
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