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Title: 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. (c) 2000 The American Physical Society.

Authors:
 [1];  [2];  [3]
  1. Physics Department, Zagazig University, Zagazig, (Egypt)
  2. (United States)
  3. Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)
Publication Date:
OSTI Identifier:
20216468
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 61; Journal Issue: 11; Other Information: PBD: 1 Jun 2000; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; HYPERONS; PERTURBATION THEORY; CHIRAL SYMMETRY; PARTICLE DECAY; LAGRANGIAN FIELD THEORY; S WAVES; P WAVES; THEORETICAL DATA

Citation Formats

Abd El-Hady, A., International Institute of Theoretical and Applied Physics, Iowa State University, Ames, Iowa 50011, and Tandean, Jusak. Hyperon nonleptonic decays in chiral perturbation theory reexamined. United States: N. p., 2000. Web. doi:10.1103/PhysRevD.61.114014.
Abd El-Hady, A., International Institute of Theoretical and Applied Physics, Iowa State University, Ames, Iowa 50011, & Tandean, Jusak. Hyperon nonleptonic decays in chiral perturbation theory reexamined. United States. doi:10.1103/PhysRevD.61.114014.
Abd El-Hady, A., International Institute of Theoretical and Applied Physics, Iowa State University, Ames, Iowa 50011, and Tandean, Jusak. Thu . "Hyperon nonleptonic decays in chiral perturbation theory reexamined". United States. doi:10.1103/PhysRevD.61.114014.
@article{osti_20216468,
title = {Hyperon nonleptonic decays in chiral perturbation theory reexamined},
author = {Abd El-Hady, A. and International Institute of Theoretical and Applied Physics, Iowa State University, Ames, Iowa 50011 and Tandean, Jusak},
abstractNote = {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. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevD.61.114014},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 11,
volume = 61,
place = {United States},
year = {2000},
month = {6}
}