Hyperon Nonleptonic Weak Decays Revisited

Details Hyperon Nonleptonic Weak Decays Revisited Hyperon Nonleptonic Weak Decays Revisited

2000-11-27

arxiv.org/abs/hep-ph/0011328v2

J.Phys.G27:163-174,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, RevTeX

Scientific paper

10.1088/0954-3899/27/2/302

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.

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