these black regions of impact parameter space only induce elastic scattering and not diffraction dissociation. Thus as one increases energy the elastic cross section grows rapidly while the diffraction dissociation cross section, coming from those regions in impact parameter space where $S(b)$ is neither too close to zero or too close to one, grows very slowly. (ii) In the Regge language one must include multiple pomeron exchange in addition to the single pomeron exchange which is valid at lower energy. This multiple pomeron exchange gives absorptive (virtual) corrections which slow the growth coming from single pomeron exchange. (iii) The “gap survival” probability\[25,26\] decreases with energy compensating the growth due to single pomeron exchange. Although gap survival probability is a concept usually used for hard collisions I think the same idea applies to single diffraction dissociation, at least in a heuristic way, in hadron-hadron collisions. It is likely that (i), (ii) and (iii) are just different ways of saying the same thing.

Deep inelastic lepton-proton scattering analogs of the soft physics results
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An “elastic” scattering amplitude
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Recently, there has been an interesting suggestion as to how to test unitarity limits in deep inelastic scattering\[27\]. Of course there is no 