第二十届全国中高能核物理大会暨第十四届全国中高能核物理专题研讨会

We discuss the impact of phase transitions on quark spin fluctuation and correlation. We propose that quark-antiquark correlation which related to vector meson spin alignment and Hyperon spin correlation can serve as a signature of CEP. Using the (p)NJL model, we qualitatively study the properties of quark-antiquark spin correlation. Our findings reveal a peak structure near the CEP, which could serve as an experimental signature of the CEP and explain the non-monotonic behavior of meson alignment at low collision energies.