Nearly tri-bimaximal neutrino mixing and CP violation from μ–τ symmetry breaking

By Z. Xing. 2002

546 citations recorded by the source corpus.

Assuming the Majorana nature of massive neutrinos, we generalize the Friedberg-Lee neutrino mass model to include CP violation in the neutrino mass matrix M-v. We show that a favorable neutrino mixing pattern (with theta(12) approximate to 35.3 degrees, theta(23) = 45 degrees, theta(13) not equal 0 degrees and delta = 90 degrees) can naturally be derived from M-v if it has an approximate or softly-broken mu-tau symmetry. We point out a different way to obtain the nearly tri-bimaximal neutrino mixing with delta = 0 degrees and non-vanishing Majorana phases. The most general case, in which all the free parameters of M-v are complex and the resultant neutrino mixing matrix contains both Dirac and Majorana phases of CP violation, is also discussed. (c) 2006 Elsevier B.V. All rights reserved.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/adf276fb271b7c579cdc4ed4260c0065c946ef27

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In Nuclear and High Energy Physics

1. Y. Lin
2. Z. Xing
3. F. Feruglio
4. S. King
5. Guido Altarelli

Citations in the corpus

• A predictive A4 model, charged lepton hierarchy and tri-bimaximal sum rule (2008, background): “The smallness of θ13 and CP violation are correlated in the θ 13 dominance pattern [13].”