Photoproduction ofKMesons from Single Nucleons

Perturbation calculations of the lowest order are carried out for $K$-meson photoproduction from single nucleons. Results are given for scalar and pseudoscalar mesons, with or without anomalous magnetic moments for the nucleons and hyperons, and with scalar, pseudoscalar, vector, and pseudovector couplings. Numerical results are given assuming unity for the coupling constant. The difference between the present results and those carried out for pion photoproduction is due to the mass difference of the nucleons and hyperons, the larger ratio of the meson mass to the nucleon mass, and the different values for the anomalous magnetic moments. The last of these effects is particularly striking and might be of practical significance when sufficient experimental information is available.