2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/187057The contribution of subleading reggeons to the diffractive structure function ${dF_{2}^D / dx_{\funp} dt}$ is estimated from the soft physics data. This contribution leads in a natural way to the violation of the factorization property of the diffractive structure function.6 pages, LaTEX, 1 eps figureHigh Energy Physics - Phenomenologytext