Helicity polarization in relativistic heavy ion collisions

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 bea...

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Bibliographic Details
Published in:Physical review. D 2021-10, Vol.104 (7), p.1, Article 076016
Main Author: Gao, Jian-Hua
Format: Article
Language:English
Subjects:
Angular momentum
Heavy ions
Helicity
Hyperons
Ionic collisions
Polarization
Vector mesons
Viscous fluids
Vorticity
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Summary: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.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.104.076016