Flavour and CP predictions from orbifold compactification

2019/10/31 by Francisco J. de Anda, J. W. F. Valle, José W. F. Valle +1
Mathematics · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Compactification (mathematics) #Electron #Extra dimensions #Fermion #Flavour #Grand Unified Theory #Lepton #Mathematics #Neutrino Physics Research #Nuclear physics #Orbifold #Particle physics #Particle physics theoretical and experimental studies #Physics #Pure mathematics #Quark #Supersymmetry #Theoretical physics #hep-ph

paper · pdf · doi:10.1016/j.physletb.2019.135195

published as Phys.Lett.B 135195 (2019) · 11 pages, 3 figures. v2: matches published version. Note title change

openalex publication_date 2020/01/03 · arxiv created 2020/01/08 · arxiv updated 2020/01/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We propose a theory for fermion masses and mixings in which an A4 family symmetry arises naturally from a six-dimensional spacetime after orbifold compactification. The flavour symmetry leads to the successful “golden” quark-lepton unification formula. The model reproduces oscillation parameters with good precision, giving sharp predictions for the CP violating phases of quarks and leptons, in particular δℓ≃+268∘. The effective neutrinoless double-beta decay mass parameter is also sharply predicted as 〈mββ〉≃2.65meV.

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