Vortex Rings in Event-by-Event Relativistic Heavy-Ion Collisions

2024/07/02 by D. D. Chinellato, M. A. Lisa, Chinellato, David Dobrigkeit +9 · 3 citations
Physics and Astronomy · #FOS: Physical sciences #Gamma-ray bursts and supernovae #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th) #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2407.02212

openalex publication_date 2024/07/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

We present event-by-event simulations for central asymmetric light+heavy and Au+Au collisions to investigate the formation and evolution of vortex-ring structures in the longitudinal flow velocity profile. The production-plane polarization of Λ hyperons, defined w.r.t. the Λ momentum and the beam, can track the "vortex-ring" feature in the event, a characteristic vortical structure generated by longitudinal flow gradients. We make comprehensive model predictions for the rapidity-dependent vortex-ring observables for different collision system sizes at √(s_NN) = 200 and 72 GeV. Our predictions at the latter energy can be explored in the future LHCb fixed-target experiment at the Large Hadron Collider.

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• Characterizing the initial state of hydrodynamics in pp and pA collisions
• Collectivity in pPb Collisions with Femtoscopy
• Event-by-event vortex rings in fixed-target p+Ar collisions

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