2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/162000Precision measurements of diffraction have been performed by the H1 and ZEUS experiments at the HERA collider with high statistics for a wide kinematic range of photon virtuality $Q^2$. The diffractive parton densities are extracted by performing the NLO DGLAP QCD fits to diffractive data and can be used to test QCD factorisation with diffractive final states.4 pages, 7 figures, and proceedings of Moriond QCD 2008High Energy Physics - Experimenttext