Symmetric correlations as seen at RHIC
High Energy Physics - Phenomenology
2015-05-30 v3 Nuclear Theory
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 \eta = 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.
Keywords
Cite
@article{arxiv.1108.0882,
title = {Symmetric correlations as seen at RHIC},
author = {Adam Bzdak},
journal= {arXiv preprint arXiv:1108.0882},
year = {2015}
}
Comments
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