AUTHOR=Geng Yan-Feng , Li Bao-Chun 

TITLE=Properties of the particle distribution in Pb–Pb collisions at sNN=5.02 TeV and sNN=2.76 TeV

JOURNAL=Frontiers in Physics

VOLUME=Volume 11 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2023.1257937

DOI=10.3389/fphy.2023.1257937

ISSN=2296-424X

ABSTRACT= In Tsallis statistics with a multisource production, we study the transverse momentum spectra of   heavy-flavor mesons   in Pb-Pb collisions at  5.02 TeV and charged particles in Pb-Pb collisions at  2.76 TeV. A good agreement can be observed between the results obtained in the model and the experimental results of ALICE and CMS collaboration. The nuclear modification factor   is reproduced. Properties reflected in the multiparticle system are discussed by the parameters provided in the improved model. It is found that the temperature T and the   increase with the centrality for the same particle due to the excitation degree of the multiparticle system. The nonequilibrium degree at  5.02 TeV is larger than that at  2.76 TeV. It shows that the system at the larger collision energy deviates farther from the equilibrium state. Thermodynamic properties extracted by the particle distribution can help us to understand properties of the particle distribution in high energy heavy-ion collisions from different perspectives.