engleski

Hyperon Nonleptonic Weak Decays Revisited

We first review the current algebra - PCAC approach to nonleptonic octet baryon 14 weak decay B (\to) (B^{;\prime};)(\pi) amplitudes. The needed four parameters are independently determined by (\Omega \to \Xi \pi), (\Lambda K) and (\Xi ^{;-};\to \Sigma ^{;-};\gamma) weak decays in dispersion theory tree order. We also summarize the recent chiral perturbation theory (ChPT) version of the eight independent B (\to) (B^{;\prime};\pi) weak (\Delta I) = 1/2 amplitudes containing considerably more than eight low-energy weak constants in one-loop order.

Hyperon Nonleptonic Weak Decays

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