Centrality Dependence of Hadron Multiplicities in Nuclear Collisions in the Dual Parton Model

Details Centrality Dependence of Hadron Multiplicities in Nuclear Collisions in the Dual Parton Model Centrality Dependence of Hadron Multiplicities in Nuclear Collisions in the Dual Parton Model

2001-01-12

arxiv.org/abs/nucl-th/0101023v2

Phys.Lett. B511 (2001) 185-190

Physics

Nuclear Physics

Nuclear Theory

15 pages, 4 postscript figures

Scientific paper

10.1016/S0370-2693(01)00644-X

We show that, even in purely soft processes, the hadronic multiplicity in nucleus-nucleus interactions contains a term that scales with the number of binary collisions. In the absence of shadowing corrections, this term dominates at mid rapidities and high energies. Shadowing corrections are calculated as a function of impact parameter and the centrality dependence of mid-rapidity multiplicities is determined. The multiplicity per participant increases with centrality with a rate that increases between SPS and RHIC energies, in agreement with experiment.

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