Hyperon Nonleptonic Decays in Chiral Perturbation Theory Reexamined
High Energy Physics - Phenomenology
2009-10-31 v2
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.
Keywords
Cite
@article{arxiv.hep-ph/9908498,
title = {Hyperon Nonleptonic Decays in Chiral Perturbation Theory Reexamined},
author = {A. Abd El-Hady and Jusak Tandean},
journal= {arXiv preprint arXiv:hep-ph/9908498},
year = {2009}
}
Comments
14 pages, latex, 3 figures, uses axodraw.sty, minor additions, to appear in Phys. Rev. D