Vector-Meson Dominance and Current Algebra in the Parity-Violating Nonleptonic Decays ofKMesons and Hyperons

As far as the parity-violating nonleptonic decays of $K$ mesons and hyperons are concerned, many of the results obtained from the algebra of currents can be understood in a completely trivial manner using vector-meson dominance without recourse to the current commutation relations. In particular, we show that the current-algebraic approach applied to an octet Hamiltonian supplemented by the hypothesis of the universal spurion coupling leads to exactly the same physical consequences as the $K^{*}$-dominance model of Lee and Swift. We also indicate how a vector-meson-dominance model of nonleptonic decays may emerge out of a current-current interaction involving neutral as well as charged currents.