MOMENT ANALYSIS OF MULTIPLICITY DISTRIBUTIONS

Moment analysis of global multiplicity distributions previously done f or e(+)e(-) and hh processes is applied to hA and AA collisions. Oscil lations of cumulants as functions of their rank are found in all proce sses for which experimental data are available. A similar oscillation pattern is found in the dual parton model and quark-gluon string model s but not in the phenomenological fits such as modified negative binom ial distributions. The zeros of the truncated generating function move closer and closer to the unity circle in the complex z-plane when the complexity of the collision increases.