On wave function renormalization and related aspects in heavy fermion effective field theories
High Energy Physics - Phenomenology
2009-10-31 v2
Abstract
We reconsider the question of wave function renormalization in heavy fermion effective field theories. In particular, we work out a simple and efficient scheme to define the wave function renormalization with respect to the lowest order heavy fermion propagator. The method presented is free of a set of ambiguities which arise in heavy fermion effective field theories. In this context, we discuss the approaches used in the literature so far. We also calculate the fourth order pion mass contribution to the nucleon mass shift and discuss the tree and loop contributions to the electric Sachs form factor of the nucleon.
Keywords
Cite
@article{arxiv.hep-ph/9808280,
title = {On wave function renormalization and related aspects in heavy fermion effective field theories},
author = {Sven Steininger and Ulf-G. Meißner and Nadia Fettes},
journal= {arXiv preprint arXiv:hep-ph/9808280},
year = {2009}
}
Comments
25 pp, JHEP.cls, uses epsf+epsfig, 2 figs, some corrections