Measurable neutrino mass scale in A{sub 4}xSU(5)
- Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut), Foehringer Ring 6, D-80805 Muenchen (Germany)
- School of Physics and Astronomy, University of Southampton, SO17 1BJ Southampton (United Kingdom)
We propose a supersymmetric A{sub 4}xSU(5) model of quasidegenerate neutrinos which predicts the effective neutrino mass m{sub ee} relevant for neutrinoless double beta decay to be proportional to the neutrino mass scale, thereby allowing its determination approximately independently of unknown Majorana phases. Such a natural quasidegeneracy is achieved by using A{sub 4} family symmetry (as an example of a non-Abelian family symmetry with real triplet representations) to enforce a contribution to the neutrino mass matrix proportional to the identity. Tribimaximal neutrino mixing as well as quark CP violation with {alpha}{approx_equal}90 deg. d a leptonic CP phase {delta}{sub MNS{approx_equal}}90 deg. arise from the breaking of the A{sub 4} family symmetry by the vacuum expectation values of four 'flavon' fields pointing in specific postulated directions in flavor space.
- OSTI ID:
- 21503858
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 83, Issue 1; Other Information: DOI: 10.1103/PhysRevD.83.013005; (c) 2011 American Institute of Physics; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CP INVARIANCE
DOUBLE BETA DECAY
FLAVOR MODEL
MAJORANA THEORY
MASS
MIXING
NEUTRINOS
QUARKS
SIMULATION
SU-5 GROUPS
SUPERSYMMETRY
TRIPLETS
BETA DECAY
BETA-MINUS DECAY
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
FERMIONS
INVARIANCE PRINCIPLES
LEPTONS
LIE GROUPS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MULTIPLETS
NUCLEAR DECAY
PARTICLE MODELS
QUARK MODEL
SU GROUPS
SYMMETRY
SYMMETRY GROUPS