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

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arxiv 2407.02212 v1 pith:BDJM2A2D submitted 2024-07-02 nucl-th hep-phnucl-ex

classification nucl-thhep-phnucl-ex
keywords vortex-ringcollisionsevent-by-eventflowlambdalongitudinalpredictionsasymmetric
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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 $\Lambda$ hyperons, defined w.r.t. the $\Lambda$ 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 $\sqrt{s_\mathrm{NN}} = 200$ 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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Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Event-by-event vortex rings in fixed-target p+Ar collisions

    nucl-th 2025-08 conditional novelty 5.0 of 10

    Hydrodynamic simulations predict lambda polarization in p+Ar collisions that is six times larger for strong early longitudinal flow than for Bjorken flow, with an anti-lambda sign flip at weak flow, testable at LHCb SMOG.

  2. Causality of polarizeable dissipative fluids from Lagrangian hydrodynamics

    nucl-th 2025-06 conditional novelty 5.0 of 10

    In a Lagrangian model of polarized dissipative fluids, causality couples the spin, shear, and bulk relaxation times through inequalities that can make polarization mask viscosity.

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