Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8188326 | Physics Letters B | 2013 | 7 Pages |
Abstract
We discuss a minimal predictive see-saw model in which the right-handed neutrino mainly responsible for the atmospheric neutrino mass has couplings to (νe,νμ,νÏ) proportional to (0,1,1) and the right-handed neutrino mainly responsible for the solar neutrino mass has couplings to (νe,νμ,νÏ) proportional to (1,4,2), with a relative phase η=â2Ï/5. We show how these patterns of couplings could arise from an A4 family symmetry model of leptons, together with Z3 and Z5 symmetries which fix η=â2Ï/5 up to a discrete phase choice. The PMNS matrix is then completely determined by one remaining parameter which is used to fix the neutrino mass ratio m2/m3. The model predicts the lepton mixing angles θ12â34â,θ23â41â,θ13â9.5â, which exactly coincide with the current best fit values for a normal neutrino mass hierarchy, together with the distinctive prediction for the CP violating oscillation phase δâ106â.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Stephen F. King,