2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39615In the framework of the vector dominance model (VDM) new contribution into the cross-section of $D^*$-meson photoproduction at HERA has been estimated. This contribution is due to the interaction of the virtual vector $c\bar c$-mesons from photon with the proton. It has been shown that the mechanism under discussion plays the essential role for all values of transverse momentum of $D^*$-mesons at HERA. Taking into account for the contribution of this mechanism improves the description of the experimental cross section distribution.12 pages, LATEX file, 5 ps-figures; changed LATEX style; estimated the model uncertaintyHigh Energy Physics - Phenomenologytext