Centrality Versus Temperature of Protons, Deuterons, and Tritons in Au + Au Collisions at 54.4 GeV

Transverse momentum (p_T) distributions of protons (p), deuterons (d), and tritons (t) in center of mass energy 54.4 GeV gold–gold (Au–Au) collisions at RHIC are analyzed using the Levy Tsallis (TS) statistical model over different centrality bins. Experiments from the STAR Collaboration closely match the predictions of the model. Particle spectra are used to calculate the kinetic freeze-out temperatures of hadrons. Results show that the kinetic freeze-out temperature decreases with collision distance from the center to the perimeter. This study found that the kinetic freeze-out temperatures varied with mass, and that heavier particles reached the freeze-out phase before lighter ones. T_o values increased from central to peripheral collisions, according to comparison with data fitted using Blast wave function with Tsallis statistics. On the other hand, there was a drop in the TS function (current analysis). It is found doubtful that how much it is reliable to use such functions for temperature extraction in light of these peculiar tendencies.