Neutrino Masses via the Zee Mechanism in 5D split fermions model
arXiv:1008.5095 · doi:10.1103/PhysRevD.83.025017
Abstract
We study the Zee model in the framework of the split fermion model in spacetime. Neutrino masses are generated through 1-loop diagrams without the right-handed neutrinos introduced. By assuming an order one anarchical complex 5D Yukawa couplings, all the effective 4D Yukawa couplings are determined by the wave function overlap between the split fermions and the bulk scalars in the fifth dimension. The predictability of the Yukawa couplings is in sharp contrast to the original Zee model in 4D where the Yukawa couplings are unknown free parameters. This setup exhibits a geometrical alternative to the lepton flavor symmetry. By giving four explicit sets of the split fermion locations, we demonstrate that it is possible to simultaneously fit the lepton masses and neutrino oscillation data by just a handful free parameters without much fine tuning. Moreover, we are able to make definite predictions for the mixing angle , the absolute neutrino masses, and the lepton flavor violation processes for each configuration.
arXiv comment16 pages, 2 figures
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