ICHEP 2022

Anisotropic flow of (multi-)strange hadrons in Au+Au collisions at BES-II energies.

7 Jul 2022, 09:15

15m

Room 3 (Verde)

Parallel Talk Heavy Ions Heavy Ions

Speaker

Prabhupada Dixit (Indian Institute of Science Education and Research, Berhampur)

Description

One of the main goals of the STAR experiment is to map the QCD phase diagram. The flow harmonics of azimuthal anisotropy ($v_2$ and $v_3$) of particles are sensitive to the initial dynamics of the medium. The first phase of RHIC Beam Energy Scan Phase-I (BES-I) program demands a precision measurement of $v_2$ and $v_3$ specifically for $\varphi$ mesons and multi-strange hadrons in the low energy regimes.

STAR has recently finished the data taking for Beam Energy Scan Phase-II (BES-II) program with higher statistics, improved detector condition, and wider pseudorapidity coverage compared to what was available during BES-I program. In this talk, we will present the measurements of $v_2$ and $v_3$ of strange and multi-strange hadrons ($K_S^0$, $\mathrm{\Lambda }(\overline{\mathrm{\Lambda }})$, $\varphi$, ${\mathrm{\Xi }}^{-}({\overline{\mathrm{\Xi }}}^{+})$, and ${\mathrm{\Omega }}^{-}({\overline{\mathrm{\Omega }}}^{+})$) at $\sqrt{s_{NN}}$ = 14.6 and 19.6 GeV. The centrality dependence, the number of constituent quark (NCQ) scaling, and baryon to anti-baryon difference in $v_2$ and $v_3$ will be presented. Finally, the physics implications of our measurements in the context of partonic collectivity will be discussed.

Presentation materials

ICHEP_slide_v5.pdf