Exclusive J/Ψ,ρ,ϕ and γ production at HERA and LHC within dipole models

Abstract

We describe exclusive J/ψ,ρ,Φ and γ production at HERA and calculate cross sections and transverse momentum distributions for the incoherent diffractive production of vector mesons J/ψ and γ on heavy nuclei. Within the color dipole approach, we derive the multiple scattering expansion of the incoherent diffractive cross section as an expansion over quasielastic scatterings of the color dipole. We compare our results to the measurement of the ALICE (LHC) collaboration for incoherent J/ψ production