Multiplicity spectra in $e^{+}e^{-}$ and $\overline{p}p$ collisions in terms of Tsallis and Weibull distributions

Abstract

Charged hadron production in the e + e − annihilations at 91 to 206 GeV in full phase space and in pp collisions at 200 to 900 GeV collision energies are studied using nonextensive Tsallis and stochastic Weibull probability distributions. The Tsallis distribution shows better description of the data than the Weibull distribution. The 2-jet modification of the statistical distribution is applied to describe e + e − data. The main features of these distributions can be described by a two-component model with soft, collective interactions at low transverse energy and hard, constituent interactions dominating at high transverse energy. This modification is found to give much better description than a full-sample fit, and again Tsallis function is found to better describe the data than the Weibull one pointing at the non-extensive character of the multiparticle production process.