Multiplicity difference correlators under first-order QGP phase transition

Abstract

The multiplicity difference correlators between two well-separated bins in high-energy heavy-ion collisions are studied as a means to detect evidence of a first-order quark-hadron phase transition. Analytical expressions for the scaled factorial moments of multiplicity difference distribution are obtained for small bin size $\hat{I}´$ with mean multiplicity in the bin $\bar{s}\le 1.0$ within Ginzburg-Landau description. The scaling behaviors between the moments are still valid, though they behave completely different from the so-called intermittency patterns. A universal exponent ${\hat{I}}^3=1.4066$ is given to describe the dynamical fluctuations in the phase transition in small $\hat{I}´$ limit.

4 pages, RevTeX, 3 figures in EPS format