Strange hadron production at high baryon density

¹ Central China Normal University, Wuhan 430079, China
² University of Chinese Academy of Sciences, Beijing 101408, China

^* e-mail: lihc@mails.ccnu.edu.cn

Published online: 27 January 2025

Abstract

Strange hadrons have been suggested as sensitive probes of the properties of the nuclear matter created in heavy-ion collisions. At few-GeV collision energies, the formed medium is baryon-rich due to baryon stopping effect. In these proceedings, the recent results on strange hadron production in Au+Au collisions at √s_NN = 3.2, 3.5, 3.9 and 4.5 GeV with the fixed-target mode from the STAR Beam Energy Scan phase-II program are presented. The transverse momentum spectra, rapidity density distributions, excitation function and centrality dependence of strange hadrons (K_S⁰, Λ, Ξ⁻) are shown. These results are compared with those from higher collision energies and physics implications are discussed by comparing to the transport model calculations.