Field Redefinitions and Wave Function Renormalization to $O(p^4)$ in Heavy Baryon Chiral Perturbation Theory
High Energy Physics - Phenomenology
2009-10-31 v2 Nuclear Theory
Abstract
Mass- and wave-function renormalization is calculated to order in heavy baryon chiral perturbation theory. Two different schemes used in the literature are considered. Several technical issues like field redefinitions, non-transformation of sources as well as subtleties related to the definition of the baryon propagator are discussed. The nucleon axial-vector coupling constant is calculated to order as an illustrative example.
Keywords
Cite
@article{arxiv.hep-ph/9901235,
title = {Field Redefinitions and Wave Function Renormalization to $O(p^4)$ in Heavy Baryon Chiral Perturbation Theory},
author = {Joachim Kambor and Martin Mojzis},
journal= {arXiv preprint arXiv:hep-ph/9901235},
year = {2009}
}
Comments
14 pages, Standard Latex. Improved discussion in introduction and conclusions, phenomenological consequences of corrections to $g_A$ emphasized. Version published in JHEP