Speaker
Ms
Zhou Yingjie
(Central China Normal University)
Description
Exploring the QCD phase diagram and searching for the QCD critical point are among(st) the main goals of heavy-ion collision experiments. The yields and particle ratios of strange hadrons provide information about the phase diagram and particle production mechanisms in these collisions. The RHIC Beam Energy Scan program covers a wide range of energies to explore the transition from a hadronic dominated phase to a partonic dominated one. Of particular interest is the high baryon density region which is accessible through the STAR fixed-target program, which has extended the energy reach from $\sqrt{s_{\rm NN}}=7.7$ GeV to 3.0 GeV.
This presentation will report the first measurements of strange hadrons production in Au+Au collisions at $\sqrt{s_{\rm NN}}=3$ GeV. After correcting for the detector acceptance and tracking efficiencies, invariant yields and rapidity density distributions of $K_{S}^0, \Xi$ and $\phi$-meson will be presented as well as the yield ratios of $\phi/K^{-} $ and $\phi/\Xi^{-}$ will be presented. Those results will be compared to the thermal and transport model calculations to study the strangeness production in this high baryon density region. Comparisons to measurements from other experiments at similar energies will also be discussed.
Primary author
Ms
Zhou Yingjie
(Central China Normal University)
Co-authors
Prof.
Wang Yaping
(Central China Normal University)
Dr
Xie Guannan
(LBNL)
Mr
Zhang Liang
(Central China Normal University)
