Speaker
Description
The investigation of the properties of nuclear matter under extreme conditions is one of the main goals of the relativistic heavy-ion collisions. The analysis of transverse momentum spectra of produced particles provide insights into the particle production mechanisms as well as the freeze-out conditions of the system created in these collisions. We present the study of the kinetic freeze-out properties of non-strange hadrons ($\pi^{\pm}$, $\rm p$, $\overline{\rm p}$, d, $\overline{\rm d}$) along with strange hadrons ( (${\rm K}^{0}_{\rm{S}}$, $\rm \Lambda$, $\rm \overline{\Lambda}$, $\rm \Xi^{-}$, $\rm \overline{\Xi}^{+}$, $\phi$, $\rm \Omega^{-}$, and $\rm \overline{\Omega}^{+}$) in relativistic heavy-ion collisions at RHIC-BES energies. The energy and centrality dependence of freeze-out parameters, i.e., kinetic freeze-out temperature and collective flow velocity, extracted using the Blast-Wave model, for non-strange and strange hadrons will be presented. The average transverse momentum $<p_T>$ of strange hadrons as a function of system centrality and reduced hadron mass, $m/n_{q}$, will be also presented. We observe in central Au-Au collisions that $<p_T>$ as a function of reduced mass is higher for baryons than that for mesons, although it increases linearly with $m/n_{q}$. However, for peripheral events, there is an approximate scaling of average $p_T$ with the reduced hadron mass. These results will be compared with AMPT simulations, default and string-melting versions, in order to understand the importance of partonic degrees of freedom in collectivity observables.
| Category | Experiment |
|---|
