Speaker
Description
Exploring the QCD phase diagram and searching for the QCD critical point are some of the main goals of Beam Energy Scan (BES-I) program at RHIC. In 2017, as a continuation to BES-I, the STAR experiment collected large datasets of Au+Au collisions at $\sqrt{s_{NN}} =$ 54.4 GeV. The identified particle spectra and yields provide information about the bulk properties of the medium. The centrality dependence of the freeze-out parameters provides an opportunity to enlarge the (T, $\mu_B$) region of the phase diagram to search for the QCD critical point.
We present the measurements of identified charged particle spectra of $\pi^\pm$, $K{^\pm}$, $p$, and $\bar{p}$ at midrapidity $|y|\leq 0.1$. The results for the transverse momentum spectra, particle yields dN/dy, average transverse momentum $\langle$p$_{T}$$\rangle$, and particle ratios will be presented for different centrality classes and compared with AMPT and HIJING model calculations. In addition, the extracted freeze-out parameters will be compared with the previously published results. The physics implications of the results will be discussed.
| Present via | Online |
|---|
