SCALING BEHAVIOR OF MULTIPLICITY DIFFERENCES IN QUARK-HADRON PHASE-TRANSITION

It is proposed that the distribution of multiplicity difference in wel l-separated bins be studied for multiparticle production in heavy-ion collisions, where the bin multiplicities are too high for the usual in termittency analysis. It is shown that when there is a quark-hadron ph ase transition describable by the Ginzburg-Landau theory, the normaliz ed factorial moments exhibit a scaling behavior that can be specified by an exponent gamma, the numerical value of which is independent of t he parameters in the problem. The universality of gamma characterizes quark-hadron phase transition, and can be tested directly by appropria tely analyzed heavy-ion data.