Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 5, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP05(2013)084
Keywords
Neutrino Physics; CP violation; Discrete and Finite Symmetries
Categories
Funding
- National Natural Science Foundation of China [11275188, 11179007]
- EU ITN [UNILHC 237920, INVISIBLES 289442]
- STFC [ST/J000396/1]
- STFC [ST/J000396/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/J000396/1] Funding Source: researchfish
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We construct models of leptons based on S-4 family symmetry combined with a generalised CP symmetry H-CP. We show how the flavon potential can spontaneously break the symmetry S-4 (sic) H-CP down to Z(2) x H-CP(nu) in the neutrino sector, where the choice of preserved CP symmetry H-CP(nu) is controlled by free (real) parameters in the flavon potential. We propose two realistic models of this kind, one at the effective level and one at the renormalisable level. Both models predict trimaximal lepton mixing with CP being either fully preserved or maximally broken, with the intermediate possibility forbidden by the structure of the models.
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