Abstract
The phenomenon of neutrino oscillation implies that neutrinos have masses, and the flavor eigenbasis is not the mass eigenbasis, so neutrinos oscillate between different flavor states while traveling. Thus it is beyond the Standard Model, and it calls for new physics.Here we study the Zee model and Extra dimensions to explain the neutrino oscillation. First, suppose there exists a compactied fth dimension, and neutrinos have Ma jorana masses through the 5 dimensional Zee model. Second, assume the fermions are localized on a 4 dimensional brane embedded in the 5 dimensional space-time by the Split Fermion model, while the higgs are free to propagate along the extra dimension. We can get the forms of parameters in the neutrino mass matrix from Zee model. Then, transforming with the PMNS matrix, we found ranges of charged lepton masses, neutrino masses and mixing angles, and so on. Based on Anthropic Principle, we compare them to the experiment data, and we get 4 possible solutions. We also check the branch ratios of 5 lepton flavor violating processes, and they also satisfy the experiment constraints. Thus this is a possible model.