Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2009-07-27
Nucl.Phys.A830:813c-816c,2009
Physics
Nuclear Physics
Nuclear Experiment
4 pages, 8 figures, proceedings re-submitted for Quark Matter 2009 conference. This paper contains revision of one of the figu
Scientific paper
10.1016/j.nuclphysa.2009.10.074
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 $\sqrt{s_{NN}}$ = 200 GeV. We compare two differential correlation functions, namely {\it inclusive} and a differential version of the correlation measure $\tilde C$ introduced by Gavin ${\it et. al.}$. These observables can be used for the experimental study of the shear viscosity per unit entropy.
for the STAR Collaboration
Sharma Monika
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