Weak hyperon decays in heavy baryon chiral perturbation theory: Renormalization and applications
High Energy Physics - Phenomenology
2009-10-31 v1 Nuclear Theory
Abstract
The complete renormalization of the weak Lagrangian to chiral order q^2 in heavy baryon chiral perturbation theory is performed using heat kernel techniques. The results are compared with divergences appearing in the calculation of Feynman graphs for the nonleptonic hyperon decay Lambda -> p pi^- and an estimate for the size of the counterterm contributions to the s-wave amplitudes in nonleptonic hyperon decays is given.
Keywords
Cite
@article{arxiv.hep-ph/0005202,
title = {Weak hyperon decays in heavy baryon chiral perturbation theory: Renormalization and applications},
author = {B. Borasoy and G. Muller},
journal= {arXiv preprint arXiv:hep-ph/0005202},
year = {2009}
}
Comments
21 pages, 2 figures