19th International Conference on Hadron Spectroscopy and Structure in memoriam Simon Eidelman

26-31 July 2021
Mexico City
Mexico/General timezone
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Contribution Parallel

Mexico City -
Hadrons in Hot and Nuclear Environment Including Hypernuclei

Global polarization of $\Xi$ hyperons in Au+Au collisions in the STAR experiment

Speakers

• Mr. Egor ALPATOV

Abstract

The STAR experiment measured global polarization of $\Lambda$ hyperons in Au+Au collisions at $\sqrt{s_{NN}}$ = 7.7 - 200 GeV. Global hyperon polarization, appearing due to spin-orbit coupling, reflects the initial orbital angular momentum and vorticity of the system. In this talk, we will report results of $\Xi$ hyperon global polarization ($P_{\Xi^{-}+\overline\Xi^{+}}$) measurement for Au+Au collisions at $\sqrt{s_{NN}}$ = 27, 54.4 GeV and 200 GeV.