Deviation from Tri-Bimaximal Mixing and Large Reactor Mixing Angle

Details Deviation from Tri-Bimaximal Mixing and Large Reactor Mixing Angle Deviation from Tri-Bimaximal Mixing and Large Reactor Mixing Angle

2011-11-13

arxiv.org/abs/1111.3072v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 12 figures

Scientific paper

Recent observations for a non-zero $\theta_{13}$ have come from the T2K and MINOS experiments. A model of lepton mixing with a 2-3 flavor symmetry has been considered by A. Rashed and A. Datta to accommodate the sizable $\theta_{13}$ measurement. They have discussed deviations of the Bimaximal (BM) structure from the charged lepton and neutrino sector. In this work, we extend this model to derive deviations from the tri-bimaximal (TBM) pattern arising from breaking the flavor symmetry in the neutrino sector, while the charged leptons contribution has been discussed in the previous work. Choosing a certain structure to the neutrino mass matrix under a certain condition generates the TBM form in the symmetric limit. Different flavor symmetries and particle content are required to produce the TBM, rather than the BM, as the leading order mixing. This, in turn, leads to different phenomenology. Contributions from the neutrino sector towards accommodating the non-zero $\theta_{13}$ value are obtained.

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