Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8196028 | Physics Letters B | 2007 | 7 Pages |
Abstract
We present a Regge-plus-resonance (RPR) description of the p(e,eâ²K+)Y processes (Y=Î,Σ0) in the resonance region. The background contributions to the RPR amplitude are constrained by the high-energy p(γ,K+)Y data. As a result, the number of free model parameters in the resonance region is considerably reduced compared to typical effective-Lagrangian approaches. We compare a selection of RPR model variants, originally constructed to describe KY photoproduction, with the world electroproduction database. The electromagnetic form factors of the intermediate N*s and Î*s are computed in the Bonn constituent-quark model. With this input, we find a reasonable description of the p(e,eâ²K+)Y data without adding or readjusting any parameters. It is demonstrated that the electroproduction response functions are extremely useful for fine-tuning both the background and resonant contributions to the reaction dynamics.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
T. Corthals, T. Van Cauteren, P. Vancraeyveld, J. Ryckebusch, D.G. Ireland,