Perturbative gauge invariance: the electroweak theory
High Energy Physics - Theory
2008-02-03 v3
Abstract
The concept of perturbative gauge invariance formulated exclusively by means of asymptotic fields is generalized to massive gauge fields. Applying it to the electroweak theory leads to a complete fixing of couplings of scalar and ghost fields and of the coupling to leptons, in agreement with the standard theory. The W/Z mass ratio is also determined, as well as the chiral character of the fermions. We start directly with massive gauge fields and leptons and, nevertheless, obtain a theory which satisfies perturbative gauge invariance.
Cite
@article{arxiv.hep-th/9612091,
title = {Perturbative gauge invariance: the electroweak theory},
author = {Michael Dutsch and Gunter Scharf},
journal= {arXiv preprint arXiv:hep-th/9612091},
year = {2008}
}
Comments
29 pages, latex, no figures, enlarged version. to appear in Ann. Phys. (Leipzig)