Estimation of kinetic temperature and radial flow velocity using identified hadrons and light (anti-)nuclei produced in relativistic heavy-ion collisions at energies available at BNL RHIC and CERN LHC

We report the investigation of the kinetic freeze-out properties of identified hadrons [π^±, K^±. and p(p̄)] along with light (anti-)nuclei d(d̄), t(t̄), and ³He in relativistic heavy-ion collisions at BNL Relativistic Heavy Ion (RHIC) and CERN Large Hadron Collider (LHC) energies. A simultaneous fit is performed with the blast-wave model to the transverse momentum (pT) spectra of identified hadrons together with light (anti-)nuclei produced in Au+Au collisions at √sNN=7.7--200 GeV at the RHIC and in Pb+Pb collisions at √sNN=2.76 TeV at the LHC. The energy and centrality dependence of freeze-out parameters, i.e., kinetic freeze-out temperature (Tₖᵢₙ) and collective flow velocity β has been studied. It is observed that light (anti-)nuclei also participate in the collective expansion of the medium created in the collision when included in a common fit with the light hadrons. We observe a marginal rise in Tₖᵢₙ and a slight decrease in β when compared to the values obtained from the fit to light hadrons. A similar β and significantly larger Tₖᵢₙ is observed when a fit is performed to only protons and light (anti-)nuclei. Both Tₖᵢₙ and β show a weak energy dependence at most collision energies.