2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/206446Following recent predictions that the geometric scaling properties of deep inelastic scattering data in inclusive gamma*-p collisions are expected also in exclusive diffractive processes, we investigate the diffractive production of vector mesons. Using analytic results in the framework of the BK equation at non-zero momentum transfer, we extend to the non-forward amplitude a QCD-inspired forward saturation model including charm, following the theoretical predictions for the momentum transfer dependence of the saturation scale. We obtain a good fit to the available HERA data and make predictions for deeply virtual Compton scattering measurements.10 pages, 5 figures, full analysis including the charm contribution and J/PSI production. Conclusions confirmedHigh Energy Physics - Phenomenologytext