Non-Gaussian fluctuations near the QCD critical point
High Energy Physics - Phenomenology
2010-04-21 v1 High Energy Physics - Lattice
Nuclear Theory
Abstract
We study the effect of the QCD critical point on non-Gaussian moments (cumulants) of fluctuations of experimental observables in heavy-ion collisions. We find that these moments are very sensitive to the proximity of the critical point, as measured by the magnitude of the correlation length xi. For example, the cubic central moment of multiplicity ~ xi^4.5 and the quartic cumulant ~ xi^7. We estimate the magnitude of critical point contributions to non-Gaussian fluctuations of pion and proton multiplicities.
Keywords
Cite
@article{arxiv.0809.3450,
title = {Non-Gaussian fluctuations near the QCD critical point},
author = {M. A. Stephanov},
journal= {arXiv preprint arXiv:0809.3450},
year = {2010}
}
Comments
4 pages, 3 figures