GAUGE INVARIANCE AND ANOMALOUS GAUGE BOSON COUPLINGS

Details GAUGE INVARIANCE AND ANOMALOUS GAUGE BOSON COUPLINGS GAUGE INVARIANCE AND ANOMALOUS GAUGE BOSON COUPLINGS

1995-03-06

arxiv.org/abs/hep-ph/9503246v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex with all special macros included, 5 pages, no figures To appear in the Conference Proceedings for BEYOND THE STANDARD MO

Scientific paper

Using the S--matrix pinch technique we obtain to one loop order, gauge independent $\gamma W^-W^+$ and $Z W^-W^+$ vertices in the context of the standard model, with all incoming momenta off--shell. We show that the vertices so constructed satisfy simple QED--like Ward identities. These gauge invariant vertices give rise to expressions for the magnetic dipole and electric quadrupole form factors of the W gauge boson, which, unlike previous treatments, satisfy the crucial properties of infrared finiteness and perturbative unitarity.

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