Underlying A4 symmetry for the neutrino mass matrix and the quark mixing matrix
By K. Babu, E. Ma, J. Valle. 2002
541 citations recorded by the source corpus.
Abstract The discrete non-Abelian symmetry A 4 , valid at some high-energy scale, naturally leads to three degenerate neutrino masses, without spoiling the hierarchy of charged-lepton masses. Realistic neutrino mixing angles (one of which is necessarily maximal and the other large) are then automatically induced radiatively, and the correct mass splittings may be obtained in the context of softly broken supersymmetry. The quark mixing matrix is also calculable in a similar way. The mixing parameter U e 3 is predicted to be imaginary, leading to maximal CP violation in neutrino oscillations. Neutrinoless double beta decay and τ → μγ should be in the experimentally accessible range.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/7fb7b1edf0e391ead96d40943e282fa206048ce2
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In Nuclear and High Energy Physics
Citations in the corpus
- Flavor structures of charged fermions and massive neutrinos (2019, background): “Model building based on A4 flavor symmetry One of the most popular discrete flavor symmetry groups which have been used for describing the family structures of leptons and quarks is the A4 group — the symmetry group of the tetrahedron [455, 457, 458, 805, 806, 807, 808, 809].”