Statistical Hadronisation in High Energy Particle Collisions

摘要

185.1 Introduction Collisions at relativistic high energies result in producing multitude of new particles whose number can be predicted from the simple rules of statistical mechanics. Several models have been proposed which combine the statistics with thermodynamics to describe the production of particles in a systematic way. Extensive (standard) statistical approaches were used in nearly all the previous models to describe the particle multiplicity. In the present work, Tsallis [1] model (non extensive approach) and Gamma distribution [2] are used to study the charged particle multiplicity on the proton-Emulsion data as well as on p Au and p W data at P_(lab) from 27 GeV to 800 GeV. The dependence of entropic index parameter q, of Tsallis statistics on the energy, P_(lab), is also calculated.