  Diffractive heavy vector meson photoproduction accompanied by proton
dissociation is studied for arbitrary momentum transfer. The process is
described by the non-forward BFKL equation, for which a complete analytical
solution is found, giving the scattering amplitude. The impact of non-leading
corrections to the BFKL equation is also analysed. Results are compared to the
HERA data on J/psi production.
