J/Psi production in ultraperipheral Pb+Pb and p+Pb collisions at energies available at the CERN Large Hadron Collider

TL;DR

This paper calculates J/Psi production cross sections in ultraperipheral Pb+Pb and p+Pb collisions at CERN LHC energies using dipole models, successfully describing ALICE data and providing predictions for incoherent processes.

Contribution

It introduces a comparative analysis of dipole models for J/Psi production in ultraperipheral collisions, offering new predictions and insights into model dependencies.

Findings

Good agreement with ALICE data for coherent production

Cross section normalization varies with dipole model and wave function

Rapidity dependence is well constrained across models

Abstract

We compute cross sections for incoherent and coherent diffractive J/Psi production in ultraperipheral nucleus-nucleus and proton-nucleus collisions using two different dipole models fitted to HERA data. We obtain a reasonably good description of the available ALICE data for coherent J/\Psi production and present our prediction for the incoherent cross section. We also find that while the normalization of the cross section depends quite strongly on the dipole model and vector meson wave function used, the rapidity dependence is very well constrained.