Neutrino mass and the standard model

Details Neutrino mass and the standard model Neutrino mass and the standard model

2011-12-12

arxiv.org/abs/1112.2669v4

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, v4: expanded discussion section on the possible absence of grand unification

Scientific paper

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.

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