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Sizeable θ 13 from the charged lepton sector in SU(5), (tri-)bimaximal neutrino mixing and Dirac CP violation

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Abstract

The recent results from T2K and MINOS experiments point towards a relatively large value of the reactor angle θ 13 in the lepton sector. In this paper we show how a large θ 13 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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Authors and Affiliations

  1. SISSA/ISAS and INFN, Via Bonomea 265, I-34136, Trieste, Italy

    David Marzocca, Serguey T. Petcov, Andrea Romanino & Martin Spinrath

  2. IPMU, University of Tokyo, 5-1-5 Kashiwanoha, 277-8583, Kashiwa, Japan

    Serguey T. Petcov

  3. Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Blvd. Tzarigradsko chaussee, BG-1784, Sofia, Bulgaria

    Serguey T. Petcov

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  1. David Marzocca
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  2. Serguey T. Petcov
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  3. Andrea Romanino
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  4. Martin Spinrath
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Correspondence to David Marzocca.

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ArXiv ePrint: 1108.0614

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Marzocca, D., Petcov, S.T., Romanino, A. et al. Sizeable θ 13 from the charged lepton sector in SU(5), (tri-)bimaximal neutrino mixing and Dirac CP violation. J. High Energ. Phys. 2011, 9 (2011). https://doi.org/10.1007/JHEP11(2011)009

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