Abstract
A dynamical model based on broken unitary symmetry is developed for nonleptonic decays of hyperons. The contributions to these decays are taken from the primary current-current interaction and from poles due to the baryons, the meson, , and the decuplet of baryon resonances (). The contributions from the baryon and -meson poles are calculated on the assumption that weak baryon-baryon and transitions transform like divergences of the relevant weak currents, which are members of octets. The contributions from poles due to and the resonances must be included to explain the -wave amplitudes. Both - and -wave amplitudes then satisfy the triangular relations and fit the experimental values for the signs and magnitudes. The model predicts the correct sign of the mass difference.
- Received 19 October 1964
DOI:https://doi.org/10.1103/PhysRev.137.B1556
©1965 American Physical Society