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Title: Vortex rings from high energy central 𝑝 + 𝐴 collisions

Journal Article · · Physical Review. C

Relativistic p + A collisions may produce droplets of quark gluon plasma (QGP) that quickly develop a toroidal vortex structure similar to that of an expanding smoke ring. We present viscous relativistic hydrodynamic calculations of ultra-central p + A collisions and develop an experimental observable to probe the structure, correlating the polarization and momentum of hyperons emitted from the collision. This effect is robust against changes in the definition of vorticity used to calculate the polarization. Experiments at RHIC and LHC may test the existence and strength of the vortex toroids, bringing new evidence to bear on the question of collectivity in the smallest QGP droplets.

Research Organization:
The Ohio State Univ., Columbus, OH (United States); The Ohio State University, Columbus, OH (United States); Wayne State Univ., Detroit, MI (United States)
Sponsoring Organization:
Brazilian National Council for Scientific and Technological Development (CNPQ); Fulbright Commission of Brazil; National Science Foundation (NSF); São Paulo Research Foundation (FAPESP); USDOE; USDOE Office of Science (SC)
Grant/Contract Number:
SC0013460; SC0020651
OSTI ID:
1805314
Journal Information:
Physical Review. C, Journal Name: Physical Review. C Journal Issue: 1 Vol. 104; ISSN 2469-9985; ISSN 2469-9993
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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