Centrality bin size dependence of multiplicity correlation in central Au+Au collisions at $\sqrt{s_{N}N}$=200 GeV}

Abstract

We have studied the centrality bin size dependence of charged particle forward-backward multiplicity correlation strength in 5%, 0-5%, and 0-10% most central Au+Au collisions at $\sqrt{s_NN}}$=200 GeV with a parton and hadron cascade model, PACIAE based on PYTHIA. The real (total), statistical, and NBD (Negative Binomial Distribution) correlation strengths are calculated by the real events, the mixed events, and fitting the charged particle multiplicity distribution to the NBD, respectively. It is turned out that the correlation strength increases with increasing centrality bin size monotonously. If the discrepancy between real (total) and statistical correlation strengths is identified as dynamical one, the dynamical correlation may just be a few percent of the total (real) correlation.

5 pages, 4 figures

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• Higher moment singularities explored by the net proton non-statistical fluctuations
• Long range correlations, event simulation and parton percolation
• Method for the Analysis of Forward-Backward Multiplicity Correlations in Heavy-Ion Collisions
• Charged particle elliptic flow in p+p collisions at LHC energies in a transport model PACIAE
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• Event-by-event multiplicity fluctuations and correlations in ring-like and jet like events in ${}^{197}$Au-AgBr collisions at 11.6A GeV/c
• Strange particles production in relativistic nucleus-nucleus collisions at the RHIC BES energy region
• Parton rescattering effect on particle production in ultra-relativistic p+p collisions