TeV Right-handed Neutrinos and the Flavor-symmetry-improved Seesaw Mechanism

Details TeV Right-handed Neutrinos and the Flavor-symmetry-improved Seesaw Mechanism TeV Right-handed Neutrinos and the Flavor-symmetry-improved Seesaw Mechanism

1996-10-16

arxiv.org/abs/hep-ph/9610383v1

Phys.Lett.B392:403-412,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pp. LaTeX

Scientific paper

10.1016/S0370-2693(96)01571-7

Horizontal flavor symmetries can drastically suppress Dirac neutrino masses well below those of the corresponding charged leptons. We show that models can be constructed where the light neutrino mass eigenvalues are small enough to give the MSW solution to the solar neutrino problem, with a right-handed neutrino scale no larger than a TeV. We present a model of this type where the right-handed neutrino scale is generated by the spontaneous breakdown of gauged U(1)$_{B-L}$, in a radiative breaking scenario driven by the right-handed neutrino Yukawa couplings. The model allows for a solution to the $\mu$ problem, and predicts the existence of a $Z'$ boson within the reach of the LHC or the Tevatron.

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