Identified charged particle distributions in Au + Au collisions at s NN = 9.2GeV

Abstract

Midrapidity results on multiplicity density [Formula: see text] and transverse momentum distributions [Formula: see text] of pions, kaons and protons in Au + Au collisions at [Formula: see text] are reproduced by using our earlier proposed Unified Statistical Thermal Freeze-out Model (USTFM). The calculated results are found to be in fairly good agreement with the experimental data points taken from STAR experiment. Freeze-out conditions in terms of a transverse flow velocity parameter and the thermal freeze-out temperature are extracted from the fits of transverse momentum spectra of the particles at different collision centralities. A large value of midrapidity chemical potential reveals the effects of almost complete stopping in the center-of-mass frame of the system produced. The resonance decay contributions are found to have a negligible effect on the transverse momentum spectra of the particles while these are found to be significant for determining the shape of the rapidity spectra.

Centrality Dependence of ${{\boldsymbol{K}}}^{* }{(892)}^{0}$ and ϕ (1020) Production at LHC

“…Some statistical thermal models have successfully described the particle abundances at low p T . [14] It has been shown earlier [8,15] that our model can simultaneously explain the rapidity and transverse momentum distributions of hadrons in Au-Au collisions at RHIC energies. Also we have employed this model to successfully reproduce the transverse momentum distributions of hadrons produced in the central Pb -Pb collisions at √ s N N = 2.76 TeV at the LHC.…”