2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42113Exclusive photoproduction of all vector mesons by real and virtual photons is considered in the Soft Dipole Pomeron model. It is emphasized that being the Pomeron in this model a double Regge pole with intercept equal to one, we are led to rising cross-sections but the unitarity bounds are not violated. It is shown that all available data for $ρ, ω, ϕ, J/ψ$ and $Υ$ in the region of energies 1.7 $\leq W \leq $ 250 GeV and photon virtualities 0 $\leq Q^2 \leq $ 35 GeV$^2$, including the differential cross-sections in the region of transfer momenta 0 $\leq |t| \leq$ 1.6 GeV$^2$, are well described by the model.Talk presented by A. PROKUDIN at the Second International "Cetraro" Workshop & NATO Advanced Research Workshop "Diffraction 2002", Alushta, Crimea, Ukraine, August 31 - September 6, 2002High Energy Physics - Phenomenologytext