Tri‐bimaximal neutrino mixing and discrete flavour symmetries. Issue 4 (5th November 2012)

• Record Type: Journal Article
• Authors: Altarelli, G.; Feruglio, F.; Merlo, L.; Morisi, S.; Nilles, H.P.; Valle, J.W.F.
• Is Part Of: Fortschritte der Physik. Volume 61:Issue 4/5(2013)
• Page Start: 507
• Page End: 534
• Publication Date: 2012-11-05
• Subjects: Physics -- Periodicals; 530.05
• DOI: 10.1002/prop.201200117
• Languages: English
• ISSNs: 0015-8208

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>We review the application of non‐Abelian discrete groups to Tri‐Bimaximal (TB) neutrino mixing, which is supported by experiment as a possible good first approximation to the data. After summarizing the motivation and the formalism, we discuss specific models, mainly those based on A₄ but also on other finite groups, and their phenomenological implications, including the extension to quarks. The recent measurements of θ₁₃ favour versions of these models where a suitable mechanism leads to corrections to θ₁₃ that can naturally be larger than those to θ₁₂ and θ₂₃. The virtues and the problems of TB mixing models are discussed, also in connection with lepton flavour violating processes, and the different approaches are compared.</p> </abstract>