Regge Pole Model for Vector Meson Photoproduction at HERA
  Recent $HERA$ data on the photoproduction of vector mesons are analysed within a "soft", dipole pomeron model. We argued that the data on $\sigma^{\gamma\rightarrow J/\psi}_{el}$ is consistent with a soft pomeron, the apparent rapid increase resulting from the non-asymptotic effects due to the delayed asymptotics of $\sigma_{el}$ with respect to $\sigma_{tot}$. 
L.L. Jenkovszky, E.S.Martynov (N.N.Bogoliubov Institute for   Theoretical Physics, Kiev, Ukraine) and F.Paccanoni (Padova Un...