2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/209396Exclusive vector meson production and deeply virtual Compton scattering are ideally suited reactions for studying the structure of the proton and the transition from soft to hard processes. The main experimental data obtained at HERA are summarised and presented in the light of QCD approaches.To be published in the Proceedings of the HERA - LHC Workshop 13 p., 8 fig., 40 refHigh Energy Physics - Phenomenologytext