Coherent photoproduction of $J/\psi$ in nucleus-nucleus collisions in the color dipole approach- an update

Abstract

We discuss the role of $c\bar{c}g$-Fock states in the diffractive photoproduction of $J/\psi$-mesons. We build on our earlier description of the process in the color-dipole approach, where we took into account the rescattering of $c\bar{c}$ pairs using a Glauber-Gribov form of the dipole-nucleus amplitude. We compare the results of our calculations to recent data on the photoproduction of $J/\psi$ by the ALICE and LHCb collaborations.

Comments: 7 pages, 3 figures, submission to SciPost, talk given by A.Łuszczak at the XXVIII International Workshop on Depp-Inelastic Scattering and Related Subjects (DIS2021)