Results presented at the DIS97 workshop by the H1, ZEUS and E665
collaborations on processes yielding large rapidity gaps and energetic leading
baryons are reviewed. A consistent picture begins to emerge in which
diffractive processes dominate when the fractional longitudinal momentum loss
at the baryon vertex \xpom is small, with substantial contributions from
other processes as \xpom increases. The diffractive mechanism in the
deep-inelastic regime is found, both from inclusive measurements and final
state studies, to involve the exchange of a gluon carrying a large fraction of
the exchange momentum. Vector meson results show the transition from soft to
hard production mechanisms with increasing precision.Comment: 18 pages, 8 figures, LATEX, aipproc.sty. Summary talk from the
diffractive sessions of the DIS97 workshop, Chicag
