New parametrization of multiplicity distribution in pp and p-barp inelastic interactions

It is shown that two-parameter function PN(Δ,b) obtained on the assumption that three sources (superclusters) are produced during the first interaction phase and afterwards evolve into clusters with Poisson distribution of secondary particles with mean multiplicity b, well describes experimental data on negatively charged particle multiplicity distributions in pp and p-barp interactions. The data show that the parameter b rises with CMS energy √s as ln√s while the second parameter Δ is practically energy independent. 44 refs.; 6 figs.; 6 tabs