Five models for lepton mixing

  • P. M. Ferreira
  • L. Lavoura
  • P. O. LudlEmail author


We produce five flavour models for the lepton sector. All five models fit perfectly well — at the 1σ level — the existing data on the neutrino mass-squared differences and on the lepton mixing angles. The models are based on the type I seesaw mechanism, on a \( {{\mathbb{Z}}_2} \) symmetry for each lepton flavour, and either on a (spontaneously broken) symmetry under the interchange of two lepton flavours or on a (spontaneously broken) CP symmetry incorporating that interchange — or on both symmetries simultaneously. Each model makes definite predictions both for the scale of the neutrino masses and for the phase δ in lepton mixing; the fifth model also predicts a correlation between the lepton mixing angles θ 12 and θ 23.


Neutrino Physics Discrete and Finite Symmetries 


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Copyright information

© SISSA, Trieste, Italy 2013

Authors and Affiliations

  1. 1.Instituto Superior de Engenharia de LisboaLisbonPortugal
  2. 2.Centre for Theoretical and Computational PhysicsUniversity of LisbonLisbonPortugal
  3. 3.Technical University of Lisbon, Instituto Superior Técnico, CFTPLisbonPortugal
  4. 4.University of Vienna, Faculty of PhysicsViennaAustria

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