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Phys. Rev. C 61, 025204 (2000) [5 pages]

Electroproduction of strangeness above the resonance region

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M. Guidal1, J.-M. Laget2, and M. Vanderhaeghen3
1IPN Orsay, F-91406 Orsay, France
2CEA/Saclay, DAPNIA/SPhN, F-91191 Gif-sur-Yvette Cedex, France
3University Mainz, D-55099 Mainz, Germany

Received 30 April 1999; published 19 January 2000

A simple and elegant model, based on Reggeized t-channel exchanges, is successful in reproducing the main features of all existing data of the reactions epeK+Λ and epeK+Σ0. In particular, the original way in which gauge invariance is taken into account is found to be essential to describe the ratio between the Coulomb and the transverse cross sections at large Q2 that has been measured recently at the Jefferson Laboratory.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.61.025204
DOI:
10.1103/PhysRevC.61.025204
PACS:
13.60.Le, 12.40.Nn, 13.40.Gp