Are charm and high-$p_{\perp }$ jets the keys to understanding diffraction in DIS ?

Abstract

Following an introduction which explains some basic ideas about diffraction, the semiclassical approach to diffraction in deep inelastic scattering (DIS) is outlined. Some phenomenological tests of this picture, concerning the $p_{\perp }$ and mass spectra of open charm and jet production are given.

Comments: 12 pages, 4 figures. Talk given at the Ringberg workshop: `New trends in HERA physics', Ringberg Castle, Bavaria, May 1997