A See-saw model of sterile neutrino

Abstract

If the smallness of the mass of the sterile neutrino is to be explained by the see-saw mechanism, the off-diagonal entries of the mass matrix needs to be protected by some symmetry not far above the electroweak scale. We implement see-saw mechanism in a gauge model based on $SU(2{)}_L^q\times SU(2{)}_L^l\times U(1{)}_Y^q\times U(1{)}_Y^l$ un-unified gauge group which breaks to $SU(2{)}_L\times U(1{)}_Y$ at the TeV region via a two-step symmetry breaking chain. The right handed diagonal block is tied to the highest scale up to which the un-unification symmetry holds. The sterile neutrino emerges from a quark-lepton mixed representation of the un-unified group.

Revised version, to appear in Phys. Lett. B

References in corpus (3)

• Evidence for nu_mu -> nu_e Neutrino Oscillations from LSND
• Solutions to Solar Neutrino Anomaly
• Low Energy Grand Unification With SU(16)

Cited by in corpus (2)

• Scenario of Light Sterile Neutrinos with A Heavy Tau Neutrino in A Supersymmetric Model
• A Light Sterile Neutrino in the TopFlavor Model