Nucleon resonances with spin 3/2 and 5/2 in the isobar model for kaon photoproduction

Terry Mart, S. Clymton, A. J. Arifi

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31 Citations (Scopus)

Abstract

We compare two different propagator and vertex factor formulations of spin-3/2 and -5/2 nucleon resonances by using isobar models for kaon photoproduction on the proton γ+p→K++Λ. All nucleon resonances listed in the Particle Data Group listing with spin up to 5/2 and with at least a two-star rating are included in the model. The unknown coupling constants are extracted from fitting to around 7400 data points. It is found that the gauge-invariant formulation of the spin-3/2 and -5/2 interactions leads to a better agreement with experimental data. An extensive comparison of model calculation with experimental data and comparison with the previous analyses are presented. A short discussion on the cross section near the production threshold is also provided.

Original languageEnglish
Article number094019
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume92
Issue number9
DOIs
Publication statusPublished - 18 Nov 2015

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