Searching for the Critical Point of QCD: Theoretical Benchmark Calculations

Abstract

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.

10 pages, 10 figures

References in corpus (6)

• Multiplicity Fluctuations in Hadron-Resonance Gas
• Multiplicity fluctuations in relativistic nuclear collisions: statistical model versus experimental data
• Forward-Backward Charge Fluctuations at RHIC Energies
• Baryon Number and Electric Charge Fluctuations in Pb+Pb Collisions at SPS energies
• Multiplicity Fluctuations in Proton-Proton and Nucleus-Nucleus Collisions
• Possible links between the liquid-gas and deconfinement-hadronization phase transitions

Cited by in corpus (5)

• Fluctuations of the $K/\pi$ Ratio in Nucleus-Nucleus Collisions: Statistical and Transport Models
• Multiplicity Fluctuations in Nucleus-Nucleus Collisions: Dependence on Energy and Atomic Number
• Multiplicity Fluctuations in Limited Segments of Momentum Space in Statistical Models
• Multiplicity Fluctuations and Correlations in Limited Momentum Space Bins in Relativistic Gases
• Statistical Fluctuations and Correlations in Hadronic Equilibrium Systems