Standard Model Higher Order Corrections to the WWγ/WWZ Vertex

Details Standard Model Higher Order Corrections to the WWγ/WWZ Vertex Standard Model Higher Order Corrections to the WWγ/WWZ Vertex

1995-04-24

arxiv.org/abs/hep-ph/9504382v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages Latex, uses revtex[aps,aipbook,floats]. To appear in the proceedings of the International Symposium on Vector Boson S

Scientific paper

10.1063/1.49293

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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