Sizeable θ13 from the Charged Lepton Sector in SU(5), (Tri-)Bimaximal Neutrino Mixing and Dirac CP Violation
Abstract
The recent results from T2K and MINOS experiments point towards a relatively large value of the reactor angle θ13 in the lepton sector. In this paper we show how a large θ13 can arise from the charged lepton sector alone in the context of an SU(5) GUT. In such a scenario (tri-)bimaximal mixing in the neutrino sector is still a viable possibility. We also analyse the general implications of the considered scenario for the searches of CP violation in neutrino oscillations.
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