Initial-State Charge Density Predicts Final-State Net Charge Flow in Heavy-Ion Collisions

2025/05/21 by Sousa, Jefferson, Sievert, Matthew D., Noronha-Hostler, Jacquelyn +2
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th)

paper · doi:10.48550/arxiv.2505.16038

Abstract

We propose a new class of charge-conjugation-odd flow observables and use them to investigate the dynamics of conserved currents in simulations of relativistic heavy-ion collisions. Inspired by the success of the initial energy and momentum distributions at predicting final-state anisotropic flow, we construct systematically-improvable initial-state estimators for final net-charge flow observables, which we validate with numerical simulations. This opens the possibility of a multitude of new charge-dependent probes of heavy-ion collisions of different systems and energies.

Citations

• Critical fluid dynamics in two and three dimensions
• Initial energy-momentum to final flow: a general framework for heavy-ion collisions
• Initial state fluctuations of QCD conserved charges in heavy-ion collisions
• Bayesian parameter estimation for relativistic heavy-ion collisions
• The iEBE-VISHNU code package for relativistic heavy-ion collisions
• Relativistic hadron-hadron collisions in the ultra-relativistic quantum molecular dynamics model

Related

• Unlocking "imprints" of conserved charges in the initial state of heavy-ion collisions
• Transport-based initial conditions for heavy-ion collisions at finite densities
• Initial state fluctuations of QCD conserved charges in heavy-ion collisions
• Toward Initial Conditions of Conserved Charges
• Phenomenological developments for event-by-event fluctuations of conserved charges