Dynamical evolution of the spectator systems produced in ultra-relativistic heavy-ion collisions

TL;DR

This paper investigates the dynamical decay of spectator remnants in ultra-relativistic heavy-ion collisions using a stochastic Langevin approach, aiming to connect electromagnetic effects with pion distribution measurements.

Contribution

It introduces a novel dynamical model based on Langevin equations to study spectator decay in heavy-ion collisions, linking electromagnetic fields to experimental observables.

Findings

First-time dynamical analysis of spectator decay in this context

Potential to relate electromagnetic fields to pion distributions

Provides insights into the excitation and decay of spectator systems

Abstract

In peripheral heavy-ion collisions at ultra-relativistic energies, usually only parts of the colliding nuclei effectively interact with each other. In the overlapping zone, a fireball or quark-gluon plasma is produced. The excitation energy of the heavy remnant can range from a few tens to several hundreds of MeV, depending on the impact parameter. The decay of these excited spectators is investigated in this work for the first time within a dynamical approach based on the multi-dimensional stochastic Langevin equation. The potential of this exploratory work to understand the connection between electromagnetic fields generated by the heavy spectators and measured pion distributions is discussed.