Vortex rings from high energy central p plus A collisions

Author(s)

Lisa, Michael Annan ^[1] ; Prado Barbon, Joao Guilherme ^[2] ; Chinellato, David Dobrigkeit ^[2] ; Serenone, Willian Matioli ^[2] ; Shen, Chun ^{[3, 4]} ; Takahashi, Jun ^[2] ; Torrieri, Giorgio ^[2]

Affiliation

^[1] Ohio State Univ, Columbus, OH 43210 - USA

^[2] Univ Estadual Campinas, Inst Fis Gleb Wataghin, Campinas - Brazil

^[3] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 - USA

^[4] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48201 - USA

• Document type: Journal article
• Source: Physical Review C; v. 104, n. 1 JUL 6 2021.
• Web of Science Citations: 0

Abstract

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 ultracentral 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 the Brookhaven National Laboratory Relativistic Heavy Ion Collider and the CERN Large Hadron Collider 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. (AU)

• FAPESP's process: 17/05685-2 - Hadronic physics in high energy nuclear collisions
• Grantee: Jun Takahashi
• Support Opportunities: Special Projects
• FAPESP's process: 19/16293-3 - Phenomenology on LHC heavy ion collisions
• Grantee: João Guilherme Prado Barbon
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 21/01700-2 - An effective field theory of relativistic local equilibrium
• Grantee: Donato Giorgio Torrieri
• Support Opportunities: Regular Research Grants
• FAPESP's process: 19/05700-7 - Probing the Quark-Gluon Plasma through the study of hydrodynamical evolution
• Grantee: Willian Matioli Serenone
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 17/06508-7 - Development of hydrodynamics as a field theory
• Grantee: Donato Giorgio Torrieri
• Support Opportunities: Regular Research Grants