Diffractive vector meson production in ultraperipheral heavy ion collisions from the Color Glass Condensate

Abstract

We compute cross sections for incoherent and coherent diffractive J/$Ψ$ and $Ψ(2S)$ production in ultraperipheral heavy ion collisions. The dipole models used in these calculations are obtained by fitting the HERA deep inelastic scattering data and compared with available electron-proton diffraction measurements. We obtain a reasonably good description of the available ALICE data. We find that the normalization of the ultraperipheral cross section has large model dependence, but the rapidity dependence is more tightly constrained.

6 pages, 4 figures. Talk given by H.M. at XXII. International Workshop on Deep-Inelastic Scattering and Related Subjects