Measurement of Light Nuclei Production in Heavy-ion Collisions by the STAR experiment

Abstract

In these proceedings, we present the measurements of centrality, transverse momentum and rapidity dependences of proton ($p$) and light nuclei ($d$ ($\overline{d}$), $t$, ${}^3\mathrm{He}$ ($\overline{{}^3\mathrm{He}}$), and ${}^4\mathrm{He}$) production in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 3 GeV, and isobaric (Ru+Ru and Zr+Zr) collisions at $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV. The compound yield ratios in central collisions at 3 GeV are found to be larger than the transport model calculations. Furthermore, the kinetic freeze-out parameters at 3 GeV show a different trend compared to those of light hadrons ($\pi$, $K$, $p$) at higher energies.

Comments: 6 pages, 5 figures, contribution to XXIXth International Conference on Ultra-relativistic Nucleus-Nucleus Collisions (QM 2022)