2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/171953We discuss recent calculations of the survival probability of the large rapidity gaps in exclusive processes of the type pp --> p+A+p at high energies. Absorptive or screening effects are important, and one consequence is that the total cross section at the LHC is predicted to be only about 90 mb.7 pages, 2 figures; Based on a talk by A.D. Martin at the CERN - DESY Workshop "HERA and the LHC", 26 - 30 May 2008High Energy Physics - Phenomenologytext