https://doi.org/10.1051/epjconf/202531605002
Measurements of 4ΛH and 4ΛHe Production in √sNN = 3.0-3.5 GeV Au+Au Collisions at RHIC
University of Chinese Academy of Science
* e-mail: huchenlu@ucas.ac.cn
Published online: 27 January 2025
Hypernuclei, which are bound states of nuclei with at least one hyperon, serve as excellent experimental probes for studying the hyperon-nucleon (Y-N) interaction. In these proceedings, the measurements of A=4 hypernuclei (4ΛH and 4ΛHe) production from the RHIC-STAR experiment utilizing the fixed target datasets are presented. The measured yields dN=dy of 4ΛH and 4ΛHe as a function of rapidity are shown from √sNN and 3.5 GeV Au+Au collisions. Additionally, the energy dependencies of the ratio of 4ΛH/Λ and 4ΛHe/Λ are examined to explore isospin effects. The mass dependence of the mean transverse momentum <pT> are also discussed. Furthermore, calculations from PHQMD, thermal model and transport model JAM plus coalescence afterburner are compared to these results and the relevant physics implications are discussed.
© The Authors, published by EDP Sciences, 2025
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