Recent results on strangeness production at STAR

摘要

We report on the measurements of strange hadrons (K~±, K_S~0, Λ, Ξ, ? and Φ) production at mid-rapidity in Au+Au collisions at √s_(NN) = 7.7 - 39 GeV from the STAR beam energy scan (BES) program. The collision energy dependence of strange hadron yields are presented. The strange hadron related particle ratios are compared with calculations from statistical and hadronic cascade models. The nuclear modification factors and baryon to meson ratios (Λ/K_S~0 and ?/Φ) are presented. The physics implications for collision dynamics are discussed.