Anomalous Vector-Boson Couplings in Majorana Neutrino Models

Abstract

We examine the contributions of Majorana neutrinos to CP-violating WWZ and ZZZ self-couplings, using a model in which sterile neutrinos couple to the W and Z by mixing with a fourth-generation heavy lepton. We find that the induced form factors can be as large as 0.5%. The model satisfies all phenomenological bounds in a natural way, including those due to the strong limits on the neutron and electron electric dipole moments. Anomalous CP-odd couplings of this size are unlikely to be observed at LEP200, but might be detectable at NLC.

LaTeX file, 15 pages (one figure available upon request), NEIP-004, McGill-94/18, RAL/94-053

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Cited by in corpus (4)

• Flavour-Violating Charged Lepton Decays in Seesaw-Type Models
• Study of Trilinear Gauge Boson Couplings at the Tevatron Collider
• Loop Effects of Exotic Leptons on Vector-Boson Pair Production at e^+e^- Colliders
• A set of sum rules for anomalous gauge boson couplings