Field Redefinitions and Wave Function Renormalization to $O(p^4)$ in Heavy Baryon Chiral Perturbation Theory

Details Field Redefinitions and Wave Function Renormalization to $O(p^4)$ in Heavy Baryon Chiral Perturbation Theory Field Redefinitions and Wave Function Renormalization to $O(p^4)$ in Heavy Baryon Chiral Perturbation Theory

1999-01-06

arxiv.org/abs/hep-ph/9901235v2

JHEP 9904 (1999) 031

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, Standard Latex. Improved discussion in introduction and conclusions, phenomenological consequences of corrections to

Scientific paper

10.1088/1126-6708/1999/04/031

Mass- and wave-function renormalization is calculated to order $p^4$ 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 $g_A$ is calculated to order $p^4$ as an illustrative example.

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