On the Deconfinement Phase Transition in Heavy-Ion Collisions

Abstract

The factorial moments (FM) of multiplicity distribution are used to study the deconfinement phase transition in heavy-ion collisions. The relation between FM and the partition number, $M$, results positive intermittency exponents, ${\varphi }_q$. According to the signatures suggested from certain statistical models, the two-dimensional results of the dependence of ${\varphi }_q/{\varphi }_2$, anomalous fractal, $d_q/d_2$ and Rényi dimensions, ${\mathcal{R}}_q/\mathcal{R}$, and the normalized exponents, ${\zeta }_q$, on the orders of FM evidently supply evidence for the quark-hadron phase transition in Pb+Pb collisions at 158 AGeV.

18 pages, 5 eps-figures