Neutrino mass and the Standard Model
arXiv:1112.2669 · doi:10.1142/S0217732313500107
Abstract
It is pointed out (not for the first time) that the minimal Standard Model, without additional gauge-singlet right-handed neutrinos or isotriplet Higgs fields, allows for nonvanishing neutrino masses and mixing. The required interaction term is nonrenormalizable and violates the global B-L symmetry. The ultimate explanation of this interaction term may or may not rely on grand unification.
6 pages, v7: published version
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