Symmetric correlations as seen at RHIC

Abstract

We analyze the forward-backward multiplicity correlation coefficient as measured by STAR. We show that in the most central Au+Au collisions bins located symmetrically around η= 0 with large separation in pseudorapidity are more strongly correlated than bins located asymmetrically with smaller separation. In proton-proton collisions the opposite effect is observed. It suggests a qualitatively different behavior of the two-particle correlation as a function of pseudorapidity sum in p+p and Au+Au collisions.

7 pages; argument with the STAR ZDC added, more accurate calculation performed, conclusions unchanged; new section 4 with comments, to appear in Phys. Rev. C Rapid Comm

References in corpus (6)

• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Long Range Forward-Backward Correlations and the Color Glass Condensate
• Growth of Long Range Forward-Backward Multiplicity Correlations with Centrality in Au+Au Collisions at $\sqrt{s_{NN}}$ = 200 GeV
• Forward-backward multiplicity correlations in the wounded nucleon model
• Long range correlations, event simulation and parton percolation
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Cited by in corpus (7)

• Longitudinal fluctuations of the fireball density in heavy-ion collisions
• Forward-backward correlations between multiplicities in windows separated in azimuth and rapidity
• Forward-backward multiplicity correlations in relativistic heavy-ion collisions in a superposition approach
• Partial correlation analysis method in ultra-relativistic heavy-ion collisions
• Multibin correlations in a superposition approach to relativistic heavy-ion collisions
• Rapidity bin multiplicity correlations from a multi-phase transport model
• Forward-backward multiplicity correlations at the LHC from independent sources