Incident energy dependence of pt correlations at relativistic energies

Details Incident energy dependence of pt correlations at relativistic energies Incident energy dependence of pt correlations at relativistic energies

2005-04-29

arxiv.org/abs/nucl-ex/0504031v2

Phys.Rev.C72:044902,2005

Physics

Nuclear Physics

Nuclear Experiment

7 pages, 4 figures, RevTeX, final version as published in Physical Review C

Scientific paper

10.1103/PhysRevC.72.044902

We present results for two-particle transverse momentum correlations, , as a function of event centrality for Au+Au collisions at sqrt(sNN) = 20, 62, 130, and 200 GeV at the Relativistic Heavy Ion Collider. We observe correlations decreasing with centrality that are similar at all four incident energies. The correlations multiplied by the multiplicity density increase with incident energy and the centrality dependence may show evidence of processes such as thermalization, minijet production, or the saturation of transverse flow. The square root of the correlations divided by the event-wise average transverse momentum per event shows little or no beam energy dependence and generally agrees with previous measurements at the Super Proton Synchrotron.

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