Exclusive four-pion photoproduction in ultra-peripheral heavy-ion collisions at RHIC and LHC energies

TL;DR

This paper investigates exclusive four-pion production in ultra-peripheral heavy-ion collisions at RHIC and LHC, using photon-nucleus interaction models and recent data to improve understanding and predict outcomes at different energies.

Contribution

It provides new theoretical predictions for four-pion photoproduction at RHIC and LHC energies, incorporating recent experimental data to refine the models.

Findings

Predictions align with STAR data at RHIC.

Models successfully incorporate recent H1 data.

Provides forecasts for LHC energies.

Abstract

We study the photoproduction of exclusive $2\pi^+2\pi^-$ mesons in ultra-peripheral heavy-ion collisions at RHIC and LHC energies. Predictions in photon-nucleus interactions are calculated for various resonances at central and forward rapidities. The recent H1 preliminary data are utilized to improve the description of the poorly known $\gamma p \to 4\pi^\pm p$ process. We present the comparisons of our results to the available STAR data at RHIC, and made predictions for LHC energies.