An assumption about the structure of single-particle matrix elements of the weak nonleptonic Hamiltonian is suggested and motivated. Using this assumption together with the algebra of currents, we calculate the $S$- and $P$-wave decays of hyperons, and the $K$ decays, and find good agreement with experiment.

• Received 1 September 1967

DOI:https://doi.org/10.1103/PhysRev.168.1866