2024/03/05 by Junaid Tariq, Tariq, Junaid, M. U. Ashraf +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2403.02759
openalex publication_date 2024/03/05 · openalex created_date 2024/03/07 · openalex updated_date 2026/07/28
We report the investigation of the kinetic freeze-out properties of identified hadrons (π^±, K^± and p( p)) along with light (anti-)nuclei d ( d), t ( t) and 3He in relativistic heavy-ion collisions at RHIC and LHC energies. A simultaneous fit is performed with the Blast-Wave (BW) model to the transverse momentum (\ppt) spectra of identified hadrons together with light (anti-)nuclei produced in Au+Au collisions at \sqrtsNN = 7.7 -- 200 GeV at the RHIC and in Pb+Pb collisions at √s_NN = 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.