  Exclusive 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 rho, omega, phi, J/psi and Upsilon in the
region of energies 1.7 <= W <= 250 GeV and photon virtualities 0 <= Q^2 <= 35
GeV^2, including the differential cross-sections in the region of transfer
momenta 0 <= |t| <= 1.6 GeV^2, are well described by the model.

High Energy Physics - Phenomenology