DIFFRACTIVE DEEP-INELASTIC SCATTERING FROM THE GENERALIZED BFKL POMERON - PREDICTIONS FOR HERA

We present microscopic QCD calculation of the cross-section of diffrac tive deep inelastic scattering (DIS) and of the partonic structure of the pomeron from the dipole approach to the generalized BFKL pomeron. We carry out a detailed analysis of how one can factor, out the nonper turbative normalization of the diffractive DIS cross-section and its Q (2)-evolution, which can be cast in the form of the conventional QCD e volution. We demonstrate that the pomeron cannot be treated as a parti cle with uniquely defined structure function and flux in the proton. W e find strong factorization breaking which can approximately be descri bed by the two-component structure function of the pomeron, each compo nent endowed with the different flux of pomerons in the proton. We pre dict very weak Q(2)-dependence of the diffractive contribution to the proton structure function.