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

Abstract

We present, using the dynamically constrained phase-space coalescence model, to investigate the centrality dependence of light (anti)nuclei and (anti)hypertriton production based on the $6.2\ifmmode\times\else\texttimes\fi{}{10}^{7}$ hadronic final states generated by the paciae model in Au+Au collisions at $\sqrt{{s}_{NN}}=200$ GeV in $|y|<1$ and ${p}_{T}<5$ acceptances. We found 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 of centrality. These theoretical results are consistent with STAR and PHENIX data. Furthermore, we found that the yields of light (anti)nuclei and (anti)hypertriton per participant nucleon increase linearly with the increase of the number of participants, and this distribution property depends on the mass number of the matter produced.