Radiative neutrino masses, lepton flavor mixing and muon g - 2 in a leptoquark model

We propose a leptoquark model with two scalar leptoquarks S-1 (3, 1, 1/3) and (R-2 (3, 2, 1/6) to give a combined explanation of neutrino masses, lepton flavor mixing and the anomaly of muon g - 2, satisfying the constraints from the radiative decays of charged leptons. The neutrino masses are generated via one-loop corrections resulting from a mixing between S-1 and e R-2. With a set of specific textures for the leptoquark Yukawa coupling matrices, the neutrino mass matrix possesses an approximate mu-tau reflection symmetry with (M-nu)(ee) = 0 only in favor of the normal neutrino mass ordering. We show that this model can successfully explain the anomaly of muon g - 2 and current experimental neutrino oscillation data under the constraints from the radiative decays of charged leptons.

Automated summary

The proposed leptoquark model uses two scalar leptoquarks to explain neutrino masses, lepton flavor mixing, and the muon g - 2 anomaly while satisfying constraints from the radiative decays of charged leptons. The neutrino mass matrix possesses an approximate mu-tau reflection symmetry, with (M-nu)(ee) = 0 only in favor of the normal neutrino mass ordering, and the model successfully explains the muon g - 2 anomaly and current experimental neutrino oscillation data.