Partial $\mu -\tau$ Textures and Leptogenesis

Abstract

Motivated by the recent results from Daya Bay, Reno and Double Chooz Collaborations, we study the consequences of small departures from exact $\mu -\tau$ symmetry in the neutrino sector, to accommodate a non-vanishing value of the element $V_{e3}$ from the leptonic mixing matrix. Within the see-saw framework, we identify simple patterns of Dirac mass matrices that lead to approximate $\mu -\tau$ symmetric neutrino mass matrices, which are consistent with the neutrino oscillation data and lead to non-vanishing mixing angle $V_{e3}$ as well as precise predictions for the CP violating phases. We also show that there is a transparent link between neutrino mixing angles and see-saw parameters, which we further explore within the context of leptogenesis as well as double beta decay phenomenology.

18 pages. Few typos fixed and included more figures in the leptogenesis section with some discussion

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Cited by in corpus (4)

• A review of mu-tau flavor symmetry in neutrino physics
• Neutrino Mass Textures and Partial $\mu$-$\tau$ Symmetry
• Fermion Masses and Mixing in General Warped Extra Dimensional Models
• Neutrino Mixing and Leptogenesis in $\mu -\tau$ Symmetry