Systematic studies of the centrality and √sNN dependence of the dET/dη and dNch/dη in heavy ion collisions at midrapidity
PhysRevC_71_034908.pdf 790 KB
heavy ion-nucleus reactions
nuclear reaction theory
nuclei with mass number 190 to 219
The PHENIX experiment at the relativistic heavy ion collider (RHIC) has measured transverse energy and charged particle multiplicity at midrapidity in Au + Au collisions at center-of-mass energies √SNN = 19.6, 130, and 200 GeV as a function of centrality. The presented results are compared to measurements from other RHIC experiments and experiments at lower energies. The √SNN dependence of dET/dη and dN ch/dη per pair of participants is consistent with logarithmic scaling for the most central events. The centrality dependence of dE T/dη and dNch/dη is similar at all measured incident energies. At RHIC energies, the ratio of transverse energy per charged particle was found to be independent of centrality and growing slowly with √SNN. A survey of comparisons between the data and available theoretical models is also presented.
Physical Review C - Nuclear Physics
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American Physical Society
Copyright (c) 2005 The American Physical Society.
Graduate School of Science