Speaker
Description
The aim of this presentation is to introduce the J/ψ photoproduction in ultra-peripheral collisions. Measurements of the cross section for the J/ψ photoproduction have the potential to help us understand the structure of nuclei and hadrons or give a signature of gluon saturation. An energy-dependent hot-spot model, which can model the energy dependence of this cross section in case of both p-A and A-A collisions, is presented. The motivation for further measurements of the cross section for the incoherent J/ψ photoproduction clearly emerges from the existing results of the model. Besides, some historical remarks regarding the measurements of the structure of a proton are given, namely the description of deeply inelastic scattering and the parton model.
