Double scattering production of two $\rho^0$ mesons in UPC

TL;DR

This paper investigates the double-scattering mechanism for producing two $ ho^0$ mesons in ultraperipheral heavy ion collisions, calculating cross sections and comparing with experimental data from STAR and ALICE.

Contribution

It provides a detailed calculation of double $ ho^0$ production cross sections using impact parameter space equivalent photon approximation, enhancing understanding of meson production in heavy ion collisions.

Findings

Calculated cross sections for double $ ho^0$ production match experimental data.

Compared theoretical results with STAR and ALICE measurements.

Demonstrated the significance of double-scattering mechanisms in meson production.

Abstract

We review our recent results for double-scattering mechanism in the exclusive $AA \to AA \rho^0\rho^0$ reaction in ultrarelativistic ultraperipheral heavy ion collisions. The cross section for single and double-$\rho^0$ production is calculated in the impact parameter space equivalent photon approximation. We compare the results of our calculation with the STAR and ALICE Collaboration results on one $\rho^0(770)$ meson and four-charged-pion production.