Effect of hadronic cascade time on freeze-out properties of Identified Hadrons in Au+Au Collisions at √(s_NN) = 7.7-39 GeV from AMPT Model

We report the transverse momentum p_T spectra of identified hadrons (π^±, K^± and p(p̅)) in Au+Au collisions at √(s_NN) = 7.7 - 39 GeV from A Multi Phase Transport Model with string melting effect (AMPT-SM). During this study, a new set of parameters are explored to study the effect of hadronic cascade by varying hadronic cascade time t_max = 30 fm/c and 0.4 fm/c. No significant effect of this change is observed in the p_T spectra of light hadrons and the AMPT-SM model reasonably reproduces the experimental data. To investigate the kinetic freeze-out properties the blast wave fit is performed to the p_T spectra and it is found that the blast wave model describes the AMPT-SM simulations well. We additionally observe that the kinetic freeze-out temperature (T_kin) increases from central to peripheral collisions, which is consistent with the argument of short-lived fireball in peripheral collisions. Whereas the transverse flow velocity, <β_T> shows a decreasing trend from central to peripheral collisions indicating a more rapid expansion in the central collisions. Both, T_kin and <β_T> show a weak dependence on the collision energy at most energies. We also observe a strong anti-correlation between T_kin and <β_T>. The extracted freeze-out parameters from the AMPT-SM simulations agree with the experimental data as opposed to earlier studies that reported some discrepancies. Whereas, no significant effect is found on the freeze-out parameters by varying the t_max. We also report the p_T spectra of light hadrons and their freeze-out parameters by AMPT-SM simulations at √(s_NN) = 14.5 GeV, where no experimental data is available for comparison. Overall, the set of parameters used in this study well describes the experimental data at BES energies.