Comment on Neutrino Masses and Oscillations in an SU(3)ₗ × U(1)ₙ Model with Radiative Mechanism
Kitabayashi, Teruyuki
Original · EN
We discussed how neutrino masses and oscillations are radiatively generated in an SU(3)ₗ × U(1)ₙ gauge model with a symmetry based on Lₑ-Lμ-Lτ (′). The model is characterized by lepton triplets ψⁱ=(νⁱ,ℓ⁻ⁱ,E⁻ⁱ), where E⁻ⁱ are negatively charged heavy leptons, an SU(3)ₗ triplet Higgs scalar ξ and a singlet Higgs scalar k⁺⁺. These Higgs scalars can be interpreted as a Zee's and Zee-Babu's scalar for radiative mechanisms. We demonstrated that the mass hierarchy of Δmatm² ≫ Δm² arise as a consequence of the dynamical hierarchy between L′-conserving one-loop effects and L′-violating two-loop effects, and our model is relevant to yield quasivacuum solution for solar neutrino problem.
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