Constraints on background contributions from K+ Lambda electroproduction

Abstract

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.

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

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Cited by in corpus (11)

• Dynamical coupled-channel approach to hadronic and electromagnetic production of kaon-hyperon on the proton
• Separated Structure Functions for the Exclusive Electroproduction of $K^{+}\Lambda$ and $K^{+}{\Sigma }^0$ Final States
• A Genetic Algorithm Analysis of N* Resonances in $p(\gamma ,K^{+})\Lambda$ Reactions
• Electroproduction of kaons from the proton in a Regge-plus-resonance approach
• Helicity amplitudes and electromagnetic decays of hyperon resonances
• Electric and magnetic form factors of strange baryons
• Separated Structure Functions for Exclusive $K^{+}\Lambda$ and $K^{+}{\Sigma }^0$ Electroproduction at 5.5 GeV with CLAS
• New fits to the reaction $\gamma p\to K^{+}\Lambda$
• Photon induced K$\Lambda$ production on the proton in the low energy region
• Resonance model study on $K^{+}N\to KN\eta$ near threshold
• Irreducible tensor approach to spin observables in photo production of mesons with arbitrary spin-parity $s^{\pi }$