Eur. Phys. J. C 26, 219-228 (2002)
DOI: 10.1140/epjc/s2002-01056-7

Diffractive heavy vector meson production from the BFKL equation

R. Enberg¹, L. Motyka^{1, 2} and G. Poludniowski<sup>3

1</sup>  Department of Radiation Sciences, Uppsala University, Box 535, 751 21 Uppsala, Sweden
²  Institute of Physics, Jagellonian University, Reymonta 4, 30-059 Kraków, Poland
³  Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK

(Received: 2 July 2002 / Revised version: 29 August 2002 / Published online: 18 October 2002 )

Abstract
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 production.

© Società Italiana di Fisica, Springer-Verlag 2002