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

References in corpus (9)

• System Size and Energy Dependence of Jet-Induced Hadron Pair Correlation Shapes in Cu+Cu and Au+Au Collisions at sqrt(s_NN) = 200 and 62.4 GeV
• Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+Au collisions at sqrt(s_NN)=200 GeV
• Forward-Backward Multiplicity Correlations in Au+Au Collisions at $\sqrt{s_{NN}}$ = 200 Gev
• On the long-range correlations in hadron-nucleus collisions
• Forward-Backward rapidity correlations at all rapidities
• Theoretical analysis for the apparent discrepancy between pbarp and pp data in charged particle forward-backward multiplicity correlations
• Multiplicity Fluctuations in Au+Au Collisions at RHIC
• Energy Dependence of Short and Long-Range Multiplicity Correlations in Au+Au Collisions from STAR
• Correlation and Fluctuation in Multiparticle Production: Some Closing Remarks

Cited by in corpus (1)

• Forward-backward multiplicity correlations in the wounded nucleon model