Non-forward Balitsky-Kovchegov equation and Vector Mesons

Abstract

Considering the Balitsky-Kovchegov QCD evolution equation in full momentum space, we derive the travelling wave solutions expressing the nonlinear saturation constraints on the dipole scattering amplitude at non-zero momentum transfer. A phenomenological application to elastic vector meson production shows the compatibility of data with the QCD prediction: an enhanced saturation scale at intermediate momentum transfer.

Comments: 4 pages,5 figures, Invited talk given at the DIS 2007 Conference, Munich, Germany, April 2007