Signatures of the vortical quark-gluon plasma in hadron yields

Understand

We investigate the hadron production from the vortical quark-gluon plasma created in heavy-ion collisions.

• Based on the quark-coalescence and statistical hadronization models, we show that total hadron yields summed over the spin components are enhanced by the local vorticity with quadratic dependence.
• The enhancement factor amounts to be a few percent and may be detectable within current experimental sensitivities.
• We also show that the effect is stronger for hadrons with larger spin, and thus propose a new signature of the local vorticity, which may be detected by the yield ratio of distinct hadron species having different spins such as $\phi$ and $\eta'$.