Lepton Family Symmetry and Neutrino Mass Matrix
Abstract
The standard model of leptons is extended to accommodate a discrete Z3 X Z2 family symmetry. After rotating the charged-lepton mass matrix to its diagonal form, the neutrino mass matrix reveals itself as very suitable for explaining atmospheric and solar neutrino oscillation data. A generic requirement of this approach is the appearance of three Higgs doublets at the electroweak scale, with observable flavor violating decays.
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