Multiplicity fluctuations in Au+Au collisions at $\sqrt{s_{NN}}=130$ GeV

Abstract

We present the results of charged particle fluctuations measurements in Au + Au collisions at $\sqrt{s_{NN}}=130$ GeV using the STAR detector. Dynamical fluctuations measurements are presented for inclusive charged particle multiplicities as well as for identified charged pions, kaons, and protons. The net charge dynamical fluctuations are found to be large and negative providing clear evidence that positive and negative charged particle production is correlated within the pseudorapidity range investigated. Correlations are smaller than expected based on model-dependent predictions for a resonance gas or a quark gluon gas which undergoes fast hadronization and freeze-out. Qualitative agreement is found with comparable scaled p+p measurements and a HIJING model calculation based on independent particle collisions, although a small deviation from the 1/N scaling dependence expected from this model is observed.

9 pages, 2 figures in 3 files, submitted PRC

References in corpus (12)

• Fluctuation Probes of Quark Deconfinement
• Charged Particle Ratio Fluctuation as a Signal for QGP
• Methods for the Study of Particle Production Fluctuations
• Multiplicity distribution and spectra of negatively charged hadrons in Au+Au collisions at sqrt(s_nn) = 130 GeV
• Charged-particle pseudorapidity density distributions from Au+Au collisions at sqrt(sNN)=130 GeV
• Fluctuations of particle ratios and the abundance of hadronic resonances
• Event-by-event analysis of heavy ion collisions and thermodynamical fluctuations
• Event-by-event fluctuations of the charged particle ratio from non-equilibrium transport theory
• Mapping the QCD Phase Diagram
• Net Charge Fluctuations in Au + Au Interactions at sqrt(s_NN) = 130 GeV
• Measuring charge fluctuations in high-energy nuclear collisions
• Covariance of Antiproton Yield and Source Size in Nuclear Collisions

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