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Blankenburg, G., & Morisi, S. (2012). Fermion masses and mixing with tri-bimaximal in SO(10) with type-I seesaw. J. High Energy Phys., 01(1), 016–18pp.
Abstract: We study a class of models for tri-bimaximal neutrino mixing in SO(10) grand unified SUSY framework. Neutrino masses arise from both type-I and type-II seesaw mechanisms. We use dimension five operators in order to not spoil tri-bimaximal mixing by means of type-I contribution in the neutrino sector. We show that it is possible to fit all fermion masses and mixings including also the recent T2K result as deviation from the tri-bimaximal.
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