DIFFRACTION IN DEEP-INELASTIC SCATTERING - THE HADRONIC NATURE OF QUARKS

We analyse the ''diffractive'' events reported by the HERA groups with in a theoretical framework (Anisotropic Chrome Dynamics, ACD) that att ributes to the fundamental quanta of QCD (quarks and gluons) a complet ely hadronic behaviour except, of course, for the quark ''point-like'' coupling to the electroweak fields. The remarkable success of our cal culation, free of adjustable parameters, highlights the importance, al so in DIS, of long distance, colour confining interaction. With a care ful analysis of H1 and ZEUS data, independent of our model, we find a single power law to the eta(p) dependence of the triple differential s tructure function F-2(D) (eta(p),beta,Q(2)), yielded the universal Val ue of the Pomeron intercept alpha(p) = 1.069+/-0.03. (C) 1997 Publishe d by Elsevier Science B.V.