2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/164002The energy dependence of the total photon-proton cross-section is determined from data collected with the ZEUS detector at HERA with two different proton beam energies.4 pages, 1 figure. To appear in the proceedings of the 16th International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2008), London, England, 7-11 April 2008High Energy Physics - Experimenttext