Invariant yield and azimuthal anisotropy measurements of strange and multi-strange hadrons in Au+Au collision at $\sqrt{s_{NN}}$ = 27 and 54.4 GeV at STAR

TL;DR

This paper reports measurements of invariant yields, azimuthal anisotropy, and other observables for strange and multi-strange hadrons in Au+Au collisions at 27 and 54.4 GeV, providing insights into the quark-gluon plasma.

Contribution

It presents new experimental data on strange hadron production and flow at intermediate energies, including NCQ scaling analysis, at STAR.

Findings

Invariant yield measurements of strange hadrons at 54.4 GeV.

Observation of azimuthal anisotropy (v2, v3) at 27 and 54.4 GeV.

Evidence of NCQ scaling in flow measurements.

Abstract

In this proceedings, we have presented the invariant yield measurements of strange and multi strange hadrons such as $K^{0}_{S}$, $\Lambda$, $\bar{\Lambda}$, $\phi$, $\Xi^{-}$, $\bar{\Xi}^{+}$, $\Omega^{-}$, $\bar{\Omega}^{+}$ in Au+Au collisions at $\sqrt{s_{NN}}$ = 54.4 GeV at midrapidity ($|y|<0.5$). The second and third-order azimuthal anisotropic flow of the above mentioned particles at $\sqrt{s_{NN}}$ = 27 and 54.4 GeV are also discussed. Some of the important observables such as nuclear modification factor ($R_{CP}$), baryon to meson ratio ($\Omega/\phi$), transverse momentum dependence of $v_{2}$ and $v_{3}$ are measured. The number of constituent quark (NCQ) scaling of $v_{2}$ and $v_{3}$ is studied for all these particles.