Theory of Hard Diffraction and Rapidity Gaps

Abstract

In this talk we review the models describing the hard diffractive production of jets or more generally high-mass states in presence of rapidity gaps in hadron-hadron and lepton-hadron collisions. By rapidity gaps we mean regions on the lego plot in (pseudo)-rapidity and azimuthal angle where no hadrons are produced, between the jet(s) and an elastically scattered hadron (single hard diffraction) or between two jets (double hard diffraction).

Comments: LaTeX, AIP style of REVTEX, 15 pages (including 4 compressed uuencoded figures). Talk presented at the $10^{th}$ Topical Workshop on Proton-Antiproton Collider Physics, Fermilab, Batavia, Illinois, May 9-13, 1995