Three-loop neutrino masses via new massive gauge bosons from E6 GUT
2018
We propose an SU(3)_C\times SU(2)_L \times SU(2)_N \times U(1)_Y model arising from E_6 Grand Unified Theory (GUT). We show that the tiny neutrino masses in this model can be generated at three-loop involving the SU(2)_N gauge bosons. With Yukawa couplings around 0.01 or larger and TeV-scale SU(2)_N gauge bosons, we show that the neutrino oscillation data can be explained naturally by presenting a concrete benchmark set of input parameters. All new particles are around the TeV scale. Thus our model can be tested at the ongoing/future collider experiments.
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