Diffractive phenomena

Abstract

The most recent theoretical and experimental results in the field of diffractive scattering are reviewed. A parallel between the two current theoretical approaches to diffraction, the DIS picture in the Breit frame and the dipole picture in the target frame, is given, accompanied by a description of the models to which the data are compared. A recent calculation of the rescattering corrections, which hints at the universality of the diffractive parton distribution functions, is presented. The concept of generalized parton distributions is discussed together with the first measurement of the processes which might give access to them. Particular emphasis is given to the HERA data, to motivate why hard diffraction in deep inelastic scattering is viewed as an unrivalled instrument to shed light on the still obscure aspects of hadronic interactions.

invited talk at the XX International Symposium on Lepton and Photon Interactions at High Energies, Rome, Italy, July 2001

References in corpus (7)

• Measurement of Deeply Virtual Compton Scattering at HERA
• Probabilities of rapidity gaps in high energy interactions
• Diffractive parton distributions from the saturation model
• Diffractive Jet Production in Deep-Inelastic e^+p Collisions at HERA
• Diffractive eta_c photo-and electroproduction with the perturbative QCD Odderon
• Diffraction at HERA and the Confinement Problem
• Three-jet production in diffractive deep inelastic scattering at HERA