Speaker
Description
In heavy-ion collisions, the spin polarization of $\Lambda$ hyperon is an important measure to probe the vorticity of the quark-gluon plasma. On the other hand, other hyperons such as $\Xi^{-}$ and $\Omega^{-}$ should also possess the global polarization similar to $\Lambda$.
In this talk, I will show our recent theoretical results on the global polarization of $\Lambda$, $\Xi^{-}$ and $\Omega^{-}$ hyperons in non-central Au+Au collisions in the energy range $\sqrt{s_{\mathrm{NN}}}=7.7-200$ GeV. The effect of resonance decays on the global polarization of $\Lambda$ and $\Xi^{-}$ is also investigated. Our results provide a quantitative relation between the global polarization of $\Lambda$, $\Xi^{-}$ and $\Omega^{-}$ hyperons. This provides us a means to further test the vorticity interpretation of the global polarization in experiments.
