In-plane transverse polarization in heavy-ion collisions

2025/08/31 by Anum Arslan, Arslan, Anum, Wenbo Dong +9
Physics and Astronomy · #Dust and Plasma Wave Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Pulsars and Gravitational Waves Research

paper · pdf · doi:10.48550/arxiv.2509.00796

openalex publication_date 2025/08/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We give an analytical expression for the in-plane polarization P^x, in heavy-ion collisions that has, to our knowledge, not been measured in heavy-ion collision experiments. We also carry out a numerical study of P^x using a hydrodynamic model simulation as a cross-check for the analytical formula. It is found that if the temperature-gradient contribution is neglected the simulation result for P^x qualitatively agrees with the analytical one. The prediction of P^x can be tested in experiments and will contribute to provide a complete and consistent picture of spin phenomena in heavy-ion collisions.

Citations

• An improved formula for Wigner function and spin polarization in a decoupling relativistic fluid at local thermodynamic equilibrium
• Spin polarization of holographic baryon in strongly coupled fluid
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• Spin polarization in relativistic heavy-ion collisions
• Spin polarization in relativistic heavy-ion collisions
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• Recent developments in chiral and spin polarization effects in heavy-ion collisions
• Relativistic hydrodynamics for spin-polarized fluids
• A viscous blast-wave model for relativistic heavy-ion collisions
• Relativistic distribution function for particles with spin at local thermodynamical equilibrium
• Polarized secondary particles in unpolarized high energy hadron-hadron collisions?

Related

• A solvable model for spin polarizations with flow-momentum correspondence
• Polarization phenomenon in heavy-ion collisions
• Spin polarization from nucleon-nucleon scatterings in intermediate-energy heavy-ion collisions
• Spin polarization in relativistic heavy-ion collisions
• Spin polarization in relativistic heavy-ion collisions