M. Genovese et al., EXCITATION OF OPEN CHARM AND FACTORIZATION BREAKING IN RAPIDITY GAP EVENTS AT HERA, Physics letters. Section B, 378(1-4), 1996, pp. 347-353
We develop the pQCD description of diffraction excitation of heavy fla
vours in DIS and we derive the analytic formulas for the mass spectrum
in leading log m(f)(2). The result illustrates nicely the non-factori
zation properties of the QCD pomeron. We predict a very steep rise of
the charm content of diffraction dissociation of photons at small x(p)
. We evaluate the contribution of open charm to scaling violations in
the structure function of the pomeron.