Analysis of transverse momentum spectra of protons, deuterons, and tritons in symmetric heavy-ion collisions at = 200 GeV at the RHIC

Abstract The blast wave model with Tsallis statistics is used to analyze the transverse momentum spectra of protons ( p ), deuterons ( d ), and tritons ( t ) in = 200 GeV gold-gold (Au-Au) collisions at the RHIC in various centrality bins. In particular transverse momentum ranges, the model results closely match experimental data from the PHENIX ( p ) and STAR ( d and t ) collaborations. The data are compared with those of protons obtained in Cu+Cu collisions and deuterons and tritons in Ru+Ru collisions at a center of mass energy of 200 GeV from the STAR collaboration. Particle spectra are used to derive the kinetic freeze-out temperatures, transverse flow velocities, and freeze-out volumes. According to the findings, the kinetic freeze-out temperature increases from the central to peripheral collisions. In this transition, the transverse flow velocity and freeze-out volume both decrease. For the collisions of both collaborations, this study reveals mass-dependent kinetic freeze-out temperature and differential volume possibilities. Overall, the non-extensivity parameter q decreases with increasing centrality of the studied heavy-ion collisions, and heavier mass particles have smaller values of q , which implies higher degrees of thermalization and equilibrium in more central collisions and for heavier particles.