Vector Meson Photoproduction in the Soft Dipole Pomeron Model Framework

Abstract

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 $\rho ,\omega ,\varphi ,J/\psi$ and ${\rm Y}$ in the region of energies 1.7 $\le W\le$ 250 GeV and photon virtualities 0 $\le Q^2\le$ 35 GeV${}^2$, including the differential cross-sections in the region of transfer momenta 0 $\le |t|\le$ 1.6 GeV${}^2$, are well described by the model.

Comments: Talk presented by A. PROKUDIN at the Second International "Cetraro" Workshop & NATO Advanced Research Workshop "Diffraction 2002", Alushta, Crimea, Ukraine, August 31 - September 6, 2002