Perturbative gauge invariance: the electroweak theory
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.
 Publication:

arXiv eprints
 Pub Date:
 December 1996
 DOI:
 10.48550/arXiv.hepth/9612091
 arXiv:
 arXiv:hepth/9612091
 Bibcode:
 1996hep.th...12091D
 Keywords:

 High Energy Physics  Theory
 EPrint:
 29 pages, latex, no figures, enlarged version. to appear in Ann. Phys. (Leipzig)