Electromagnetic production of associated strangeness

A formalism, based on an isobaric approach using Feynman diagrammatic techniques, which includes the nucleonic (spin less than or equal to 5/2), hyperonic (spin 1/2), and kaonic resonances, is developed. Using this formalism, a thorough investigation of the following electromagnetic strangeness processes, for which experimental results lab are available, is performed: gamma p-->K(+)Lambda, K(+)Sigma(0), K-0 Sigma(+), for E(gamma)lab less than or equal to 2.1 GeV, ep-->e'K(+)Lambda, e'K(+)Sigma(0), and K- p-->gamma Lambda, gamma Sigma(0). A reaction mechanism, describing well enough the data, is found to include a reasonable number of baryonic resonances among a very large number of potential candidates. The extracted main kaon-hyperon-nucleon coupling constants are in good agreement with values predicted using SU(3) symmetry. The main findings of this model are compared with the results of other recent phenomenological studies. Predictions for the upcoming photoproduction polarization and electroproduction observables are presented, and their sensitivity to the phenomenological models ingredients are emphasized.