Hyperon Nonleptonic Decays in Chiral Perturbation Theory Reexamined

Abstract

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.

14 pages, latex, 3 figures, uses axodraw.sty, minor additions, to appear in Phys. Rev. D

References in corpus (4)

• Chiral perturbation theory analysis of the baryon magnetic moments revisited
• The role of resonances in non-leptonic hyperon decays
• Delta I=3/2 and Delta S =2 Hyperon Decays in Chiral Perturbation Theory
• Chiral Perturbation Theory for |Delta I|=3/2 Hyperon Decays

Cited by in corpus (13)

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• CP Violation in Hyperon Nonleptonic Decays within the Standard Model
• Hyperons in Two Flavor Chiral Perturbation Theory
• The Decay Sigma^+ -> p l^+ l^- within the Standard Model
• New Physics and CP Violation in Hyperon Nonleptonic Decays
• Testing SU(3) Flavor Symmetry in Semileptonic and Two-body Nonleptonic Decays of Hyperons
• Chiral Corrections to Hyperon Axial Form Factors
• $B\to K+$invisible, dark matter, and $CP$ violation in hyperon decays
• Studying Two-body Nonleptonic Weak Decays of Hyperons with Topological Diagram Approach
• S-wave baryon nonleptonic decay amplitude in large-N_c chiral perturbation theory
• CP violation in the hyperon decays $\Sigma \to N\pi$
• The Decay Omega^- -> Xi^- pi^+ pi^- in Chiral Perturbation Theory
• Analysis of the nonleptonic two-body decays of the $\Lambda$ hyperon