Soft processes at the LHC, II: Soft-hard factorization breaking and gap   survival
  We calculate the probability that the rapidity gaps in diffractive processes survive both eikonal and enhanced rescattering. We present arguments that enhanced rescattering, which violates soft-hard factorization, is not very strong. Accounting for NLO effects, there is no reason to expect that the black disc regime is reached at the LHC. We discuss the predictions for the survival of the rapidity gaps for exclusive Higgs production at the LHC. 
M.G. Ryskin, A.D. Martin and V.A. Khoze