arXiv:hep-ph/9811477·v1·High Energy Physics — Phenomenology

Majorana neutrino transition magnetic moments in left-right symmetric models

M. Czakon · J. Gluza · M. Zralek (University of Silesia)

Abstract

Transition magnetic moments of Majorana neutrinos are discussed in the frame of the most natural version of the LR model (with left- and right-handed triplets and a bidoublet in the Higgs sector). We show that their largest values could be at most $6 \cdot 1 0^{- 13} μ_{B}$ from diagrams with $W_{L}$ in the loop. This could happen for specific models where (i) neutrino-charged lepton mixing is maximal and (ii) $κ_{1} ≃ κ_{2}$ (VEVs for neutral Higgs fields in the bidoublet $ϕ$ are equal). Contributions from diagrams with charged Higgses in the loop are smaller than those in the SM with right-handed neutrinos.

Comments: 4 pages. Presented at the ICHEP Conference, Vancouver, 1998. To appear in Proceedings