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Comment on Radiative Neutrino Mass Matrix with a Sterile Neutrino
A mechanism of radiatively generating neutrino
masses is implemented in an SU(2)LxU(1)YxSU(2)'LxU(1)'Y
model, where the first and second families respect SU(2)LxU(1)Y
while SU(2)'LxU(1)'Y is
specific for the third family. The fourth neutrino,  , that has a
U(1)YxU(1)'Y coupling joins in
the model to induce neutrino mixings by additional interactions with e and  . The phenomenologically consistent oscillation
of -  requires a dominated coupling of
to e.
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