Energy dependence of gap survival probability and antishadowing

We discuss energy dependence of gap survival probability which follows from rational form of amplitude unitarization. In contrast to eikonal form of unitarization which leads to decreasing energy dependence of gap survival probability, we predict a non-monotonous form for this dependence.Comment: 9 pages, 3 figures, revised and extended versio

Sum rules for spin asymmetries

Starting from rotational invariance we derive sum rules for the single-spin asymmetries in inclusive production and binary processes. We also get sum rules for spin correlation parameters in elastic pp-scattering.Comment: 4 page

Universality of the preasymptotics in the hadron and photon diffraction

We note that it is premature to make a conclusion on the multiplicity of the Pomerons on the basis of the available experimental data since the interactions have a preasymptotic natureComment: 4 pages, latex, no figure

Deep--elastic scattering and asymptotics

Deep--elastic scattering and its role in discrimination of the possible absorptive and reflective asymptotic scattering mechanisms are discussed with emphasis on the difference in the experimental signatures related to production processes.Comment: 8 pages, no figures, added discussions and reference

Reflective scattering effects in double-pomeron exchange processes

We discuss energy dependence of rapidity gap survival probability in the double-pomeron exchange processes with account of the reflective scattering effects.Comment: 11 pages, 3 figure