Neutrino oscillations and rare processes in models with a small extra dimension

Abstract

We discuss Dirac neutrino masses and mixings in a scenario where both the standard model fermions and right-handed neutrinos are bulk fields in a non-factorizable geometry in five dimensions. We show how the atmospheric and solar neutrino anomalies can be satisfactorily resolved, and in particular how bimaximal mixing is realized. We also consider rare processes such as neutron–antineutron oscillations and μ → e + γ , which may occur at an observable rate.