Particle production in relativistic $pp$($\overline{p}$) and $AA$ collisions at RHIC and LHC energies with Tsallis statistics using the two-cylindrical multisource thermal model

摘要

An improved Tsallis statistics is implemented in a multisource thermal modelto describe systematically pseudorapidity spectra of charged particles producedin relativistic nucleon-nucleon ($pp$ or $p\overline{p}$) collisions at variouscollision energies and in relativistic nucleus-nucleus ($AA$) collisions atdifferent energies with different centralities. The results with Tsallisstatistics using the two-cylindrical multisource thermal model are in goodagreement with the experimental data measured at RHIC and LHC energies. It isfound that the rapidity shifts of longitudinal sources increase linearly withcollision energies and centralities in the framework. According to the laws, wealso give a prediction of the pseudorapidity distributions in$pp$($\overline{p}$) collisions at higher energies.