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Hyperon Nonleptonic Decays in Chiral Perturbation Theory Reexamined
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We recalculate the leading nonanalytic contributions to the amplitudes for hyperon nonleptonic decays in chiral perturbation theory. Our results partially disagree with those calculated before, and include new terms previously omitted in the P-wave amplitudes. Although these modifications are numerically significant, they do not change the well-known fact that good agreement with experiment cannot be simultaneously achieved using one-loop S- and P-wave amplitudes.
Forward citations
Cited by 3 Pith papers
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Hyperon non-leptonic decays in relativistic Chiral Perturbation Theory with resonances
Relativistic ChPT at NLO with resonance saturation yields a good combined fit to hyperon non-leptonic s- and p-wave decay amplitudes.
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$B\to K{+}$invisible, dark matter, and $CP$ violation in hyperon decays
In a two-Higgs-doublet plus scalar dark matter model, hyperon decay CP asymmetries can reach parts in a thousand, far above the standard model, while still satisfying kaon and dark matter constraints.
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$|\Delta I|=3/2$ non-leptonic hyperon decays in covariant baryon chiral perturbation theory
In covariant baryon chiral perturbation theory, decuplet-baryon contributions with the consistent coupling scheme, plus pion loops, most improve the fit to the |ΔI|=3/2 hyperon decay amplitudes.
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