Constraints on background contributions from K+ Lambda electroproduction

Details Constraints on background contributions from K+ Lambda electroproduction Constraints on background contributions from K+ Lambda electroproduction

2003-01-30

arxiv.org/abs/nucl-th/0301096v2

Phys.Rev. C67 (2003) 052201

Physics

Nuclear Physics

Nuclear Theory

Accepted for publication in PRC. Includes new data, additional paragraph and figure

Scientific paper

10.1103/PhysRevC.67.052201

Results for response functions for kaon electroproduction on the proton are presented. A tree-level hadrodynamical model is adopted and it is shown that some of the electroproduction response functions are particularly powerful with the eye on gaining control over the parameterization of the background diagrams. The existing data set for the p(e,e'K+)Lambda reaction appears to rule out the use of a g_{K+ Lambda p} coupling constant beyond the boundaries of softly broken SU(3) flavor symmetry. Also the use of soft hadronic form factors, which has been proposed as a valid alternative for a hadrodynamical description of the p(gamma,K+)Lambda data in the resonance region, seems to be disfavored by the magnitude of the measured p(e,e'K+)Lambda cross sections.

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