Anomalous Vector-Boson Couplings in Majorana Neutrino Models
High Energy Physics - Phenomenology
2010-11-01 v1
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.
Cite
@article{arxiv.hep-ph/9405349,
title = {Anomalous Vector-Boson Couplings in Majorana Neutrino Models},
author = {C. P. Burgess and A. Pilaftsis},
journal= {arXiv preprint arXiv:hep-ph/9405349},
year = {2010}
}
Comments
LaTeX file, 15 pages (one figure available upon request), NEIP-004, McGill-94/18, RAL/94-053