Light Nuclei Production in Au+Au Collisions at $\sqrt{s_{\mathrm{NN}}}$ = 3 GeV from the STAR experiment

Abstract

Light nuclei production is expected to be sensitive to baryon density fluctuations and can be used to probe the signatures of QCD critical point and/or a first-order phase transition in heavy-ion collisions. In this proceedings, we present the spectra and yields of protons (\bm{p}𝐩) and light nuclei (\bm{d}𝐝, \bm{t}𝐭, \bm{^{3}\mathrm{He}}3He, \bm{^{4}\mathrm{He}}4He) in Au+Au collisions at \bm{\sqrt{s_{\mathrm{NN}}}}𝐬NN = 3 GeV by the STAR experiment. Finally, it is found that the kinetic freeze-out dynamics (temperature \bm{T_{kin}}𝐓𝐤𝐢𝐧\bm{vs.}𝐯𝐬. average radial flow velocity \langle\beta_{T}\rangle⟨βT⟩) at \bm{\sqrt{s_{\mathrm{NN}}}}𝐬NN = 3 GeV extracted with the blast-wave model deviate from the trends at high energies (\bm{\sqrt{s_{\mathrm{NN}}}}𝐬NN = 7.7 - 200 GeV), indicating a different medium equation of state.