Perturbative gauge invariance: the electroweak theory

Details Perturbative gauge invariance: the electroweak theory Perturbative gauge invariance: the electroweak theory

1996-12-09

arxiv.org/abs/hep-th/9612091v3

Physics

High Energy Physics

High Energy Physics - Theory

29 pages, latex, no figures, enlarged version. to appear in Ann. Phys. (Leipzig)

Scientific paper

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.

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