ep - p h / 01 06 01 6 v 1 1 J un 2 00 1 Analyses of multiplicity distributions at Tevatron by a two - component stochastic model — No leading particle effect in E 735 Experiment —

Comparisons of multiplicity distributions at √ s = 1.8 TeV (E735 Experiment and CDF Collaboration) with our predictions by a two-component stochastic model have been made. This stochastic model is described by the pure-birth and Poisson processes. It is found that there are discrepancies among data of CERN S¯ ppS and those of Tevatron. The latter data of E735 Exp. do not contain the leading particle effect described by the Poisson process, providing that the view of the two-component stochastic model is correct. The data by CDF Coll. contain small leading particle effect. The reason is probably attributed to the correction by E735 Experiment, which is necessary to make the data of the full phase space.