Radiatively Generated Neutrino Masses in SU(3)_L x U(1)_N Gauge Models

Details Radiatively Generated Neutrino Masses in SU(3)_L x U(1)_N Gauge Models Radiatively Generated Neutrino Masses in SU(3)_L x U(1)_N Gauge Models

1999-06-16

arxiv.org/abs/hep-ph/9906383v2

Phys.Lett. B466 (1999) 267-273

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages by RevTex and 1 figure (with a reference added)

Scientific paper

10.1016/S0370-2693(99)01134-X

In SU(3)_L x U(1)_N gauge models for electroweak interactions, we discuss how to implement a radiative mechanism of generating Majorana neutrino masses by considering the property that the Higgs scalar, which has a coupling to a charged lepton (\ell)-neutrino (\nu) pair, is naturally included. The mechanism is shown to work in models with a heavy charged lepton, \omega^+, in a lepton triplet (\nu, \ell, \omega^+) and with a heavy neutral lepton, N, in (\nu, \ell, N). A minimal model with \ell and \ell^c in (\nu, \ell, \ell^c) together with a sextet Higgs scalar suffers from a fine-tuning problem to suppress tree-level neutrino masses.

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