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Helicity polarization in relativistic heavy ion collisions
Physical Review D  (IF5.296),  Pub Date : 2021-10-19, DOI: 10.1103/physrevd.104.076016
Jian-Hua Gao

We discuss helicity polarization, which can be locally induced from both vorticity and helicity charge in noncentral heavy ion collisions. Helicity charge redistribution can be generated in viscous fluid, and contributes to azimuthal asymmetry of the polarization along global angular momentum or beam momentum. We also discuss detecting the initial net helicity charge from topological charge fluctuation or initial color longitudinal field by the helicity correlation of two hyperons and the helicity alignment of vector mesons in central heavy ion collisions.