A two loop radiative neutrino model

Neutrino Oscillations Induced by Two-loop Radiative Effects

Phenomena of neutrino oscillations are discussed on the basis of two-loop radiative neutrino mechanism. Neutrino mixings are experimentally suggested to be maximal in both atmospheric and solar neutrino oscillations. By using Le −Lμ −Lτ (≡ L )-conservation, which, however, only ensures the maximal solar neutrino mixing, we find that two-loop radiative mechanism dynamically generates the maximal...

Two-loop-induced neutrino masses: A model-independent perspective

Two-loop Radiative Corrections to Neutrino Masses in SU(3)L × U(1)N Gauge Models

We have constructed two SU(3)L × U(1)N gauge models with the L ′ = Le − Lμ − Lτ symmetry, which accommodate tiny neutrino masses generated by one-loop and two-loop radiative effects. The heavy neutral leptons and heavy charged leptons are employed to specify the lepton triplets in SU(3)L, respectively, accompanied by (φ, φ, h) and (φ, φ, h), where φ stands for the standard Higgs scalar and h is...

Two-loop neutrino masses and the solar neutrino problem.

The addition of m singlet right-handed neutrinos to the Standard Model leads to radiatively generated mass corrections for the SU(2)L doublet neutrinos. For those neutrinos which are massless at the tree level after this addition, this implies a small mass generated at the two-loop level via W exchange. We calculate these mass corrections exactly by obtaining an analytic form for the general ca...

Radiative Neutrino Masses in a SUSY GUT Model

Radiatively-induced neutrino mass matrix is investigated within the framework of an SU(5) SUSY GUT model. The model has matter fields of three families 5L(+)i +5L(+)i in addition to the ordinary matter fields 5L(−)i +10L(+)i and Higgs fields H(+)+H(0), where (+, 0,−) denote the transformation properties (ω, ω, ω) (ω = +1) under a discrete symmetry Z3. R-parity violating terms are given by 5L(+)...