Proton Diffraction Dissociation and Unitarity
  It is shown that the dipole pomeron model of single diffraction dissociation -- contrary to the case of the supercritical pomeron -- is compatible with the inequality $\sigma^{SD}\leq\sigma^{tot}$, imposed by unitarity, provided the triple pomeron coupling satisfies certain conditions. With the adopted approximation the model considered as a parcticular solution of the triple pomeron decoupling problem. Explicit forms of such a coupling and a qualitative comparison with the experimental data on single DD are presented. The modified factorization properties of the model are also discussed. 
L.L. Jenkovszky, E.S.Martynov (N.N.Bogoliubov Institute for   Theoretical Physics, Kiev, Ukraine) and F.Paccanoni (Padova Un...