We propose a simple renormalizable grand unified theory based on the SU(5) gauge symmetry where the neutrino masses are generated at the quantum level through the Zee mechanism. In this model the same Higgs needed to correct the mass relation between charged leptons and down-type quarks plays a crucial role in generating neutrino masses. We show that in this model one can satisfy the constraints coming from the unification of gauge couplings and the mechanism for neutrino masses is discussed in detail. The predictions for proton decay are discussed in order to understand the testability at current and future experiments such as Hyper-Kamiokande. This simple theory predicts a light colored octet which could give rise to exotic signatures at the LHC.
Physical Review D
- Pub Date:
- October 2016
- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment;
- High Energy Physics - Theory
- minor corrections, to appear in Physical Review D