Exclusive photo- and electroproduction of mesons at large momentum transfer
Loading...
Date
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
We analyze the reactions gamma+p => M+B, with M B being either K+ Lambda, K+ Sigma0, or pi+ n, within perturbative QCD, allowing for diquarks as quasi-elementary constituents of baryons. The diquark-model parameters and the quark-diquark distribution amplitudes of the baryons are taken from previous investigations of electromagnetic baryon form factors and Compton- scattering off protons. Reasonable agreement with the few existing data at large momentum transfer is achieved if the asymptotic form (c x (1-x)) is chosen for the meson distribution amplitudes.
4 pages, LaTeX document, 2 elsart style files, and 2 eps figures. Contribution presented by W. Schweiger at the 3rd ELFE Workshop, St. Malo, France (Sep. 1996)
4 pages, LaTeX document, 2 elsart style files, and 2 eps figures. Contribution presented by W. Schweiger at the 3rd ELFE Workshop, St. Malo, France (Sep. 1996)