Centrality dependence of light (anti)nuclei and (anti)hypertriton production in Au+Au collisions at √sNN = 200 GeV

الأصل · EN

We have used the dynamically constrained phase space coalescence model to investigate the centrality dependence of light (anti)nuclei and (anti)hypertriton production based on the 6.2× 10⁷ hadronic final states generated by the PACIAE model in Au+Au collisions at √sNN=200 GeV in |y| <1 and pₜ<5 acceptances. It turned out that the yields of light (anti)nuclei and (anti)hypertriton strongly depend on the centrality, i.e. their yields decrease rapidly with the increase of centrality bins; but their yield ratios are independent on centrality. These theoretical results are consistent with the STAR and PHENIX data. Furthermore, centrality distribution of d (d), ³He (³He) and Λ³H (Λ³H) follows Gaussian distributions. This means that light (anti)nuclei and (anti)hypertriton are primarily produced in the central collisions.