Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2009-07-27
Nucl.Phys.A830:555c-558c,2009
Physics
Nuclear Physics
Nuclear Experiment
4 pages, 3 figures - To appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennessee
Scientific paper
10.1016/j.nuclphysa.2009.09.046
We present the STAR preliminary results on mid-rapidity and low transverse momentum mean, standard deviation, skewness, and kurtosis of net-charge and net-proton distributions in Au+Au and Cu+Cu collisions at $\sqrt{s_{NN}}$ = 200 GeV for various collision centralities. All the measured high moments of these distributions can be scaled by the number of participating nucleons, consistent with the soft process emissions. The ratios of fourth to second order cumulants of both the net-charge and net-proton distributions are consistent with models without QCD critical point.
for the STAR Collaboration
Nayak Tapan Kumar
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