XXVIII International Workshop on Deep-Inelastic Scattering and Related Subjects

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

15 Apr 2021, 08:36

18m

Virtual (Stony Brook, NY)

Contributed Talk Small-x, Diffraction and Vector Mesons Small-x, Diffraction and Vector Mesons

Speaker

Agnieszka Luszczak (Cracow University of Technology)

Description

We investigate the exclusive photoproduction of J/ψ mesons in ultraperipheral heavy-ion collisions in the color dipole approach. We use the color dipole formulation of Glauber-Gribov theory to calculate the diffractive amplitude on the nuclear target. We compare our results to recent published data on exclusive J/ψ production in ultraperipheral lead-lead collisions at √sNN=2.76 and √sNN=5.02TeV (ALICE data from 2019). We also work on the incorporation of gluon shadowing corrections through the inclusion of $q \bar q g$-Fock states. Such corrections appear to be necessary to describe the midrapidity ALICE data.
It is based on the paper "Coherent photoproduction of J/ψ in nucleus-nucleus collisions in the color dipole approach", Agnieszka Łuszczak and Wolfgang Schäfer
Phys. Rev. C 99, 044905

Presentation materials

DIS-AL.pdf