Excitation Function of <pt> and Net Charge Fluctuations at RHIC

Details Excitation Function of <pt> and Net Charge Fluctuations at RHIC Excitation Function of <pt> and Net Charge Fluctuations at RHIC

2004-01-15

arxiv.org/abs/nucl-ex/0401016v1

Acta Phys.Hung. A24 (2005) 85-90

Physics

Nuclear Physics

Nuclear Experiment

11 pages, 7 figures, Poster presented at Quark Matter 2004

Scientific paper

10.1556/APH.24.2005.1-4.13

We present measurements of net charge and transverse momentum fluctuations in Au + Au collisions at ?sNN = 20, 130, and 200 GeV reported in our QM 2004 poster using measures ?+-,dyn and . We observe the dynamical fluctuations are finite at all three energies and exhibit a rather modest dependence on beam energy. We also find both net charge and pt fluctuations violate the trivial 1/N scaling expected for nuclear collisions consisting of independent nucleon-nucleon interactions. We speculate the observed centrality dependence arises due to radial flow and might provide insight on the width and shape of the radial flow profile.

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