Neutrino masses and electron-muon-τ-lepton universality
Abstract
By a simple extension of the standard electroweak gauge group to SUL(2)×Ue(1)×Uμ(1)×Uτ(1), it is shown that it is possible to get light-neutrino masses in the range of a few electron volts. For this purpose it is necessary that MR, the mass scale associated with the masses of superheavy neutrinos which carries Ui(1) quantum numbers and which is related to the scale at which e-μ-τ universality is broken, is to be greater than 109 GeV. However, for the solar-neutrino problem MR should be in the range of 1011-1012 GeV. In particular, we obtain two Majorana neutrinos of almost equal mass and one Majorana neutrino (predominantly an electron neutrino) of almost zero mass.
- Publication:
-
Physical Review D
- Pub Date:
- April 1987
- DOI:
- 10.1103/PhysRevD.35.2201
- Bibcode:
- 1987PhRvD..35.2201F
- Keywords:
-
- 13.40.Fn;
- 12.40.Aa