A tadpole model for nonleptonic decays based on current-algebra and spectral-function sum rules

A tadpole model for the nonleptonic decays based on a scalar κ field proportional to the divergence of the strangeness-changing vector current-density, and on the pseudoscalar mesons π and K satisfying PCAC, is studied by use of the current-algebra and spectral-function sum rules. A reasonably good fit to the hyperon decay data is obtained.