Searching for the Critical Point of QCD: Theoretical Benchmark Calculations

Details Searching for the Critical Point of QCD: Theoretical Benchmark Calculations Searching for the Critical Point of QCD: Theoretical Benchmark Calculations

2007-07-12

arxiv.org/abs/0707.1788v3

Phys.Rev.C76:044904,2007

Physics

Nuclear Physics

Nuclear Theory

10 pages, 10 figures

Scientific paper

10.1103/PhysRevC.76.044904

We present a comprehensive study of event-by-event multiplicity fluctuations in nucleon-nucleon and nucleus-nucleus interactions from AGS/FAIR to RHIC energies within the UrQMD transport approach. The scaled variances of negative, positive, and all charged hadrons are analysed. The scaled variance in central Pb+Pb collisions increases with energy and behaves similar to inelastic p+p interactions. We find a non-trivial dependence of multiplicity fluctuations on the rapidity and transverse momentum interval used for the analysis and on the centrality selection procedure. Quantitative predictions for the NA49 experiment are given, taking into account the acceptance of the detector and the selection procedure of central events.

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