| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1848820 | Nuclear Physics B - Proceedings Supplements | 2012 | 5 Pages |
We review recent developments in models of neutrino masses and mixing. Emphases are given to models based on finite group family symmetries from which the tri-bimaximal neutrino mixing can arise. In particular, we describe one recent model based on SUSY SU(5) combined with a family symmetry based on the double tetrahedral group, T′. All 22 observable fermion masses and mixing angles and CP violating measures are fitted with only 9 parameters. In this model, a near tri-bimaximal MNS matrix and a realistic CKM matrix are simultaneously generated; the MNS matrix gets slightly modified by virtue of having the Georgi-Jarlskog relations. Due to the presence of complex Clebsch-Gordan coefficients in T′, CP violation in this model is entirely geometrical in origin. The prediction of the model for the leptonic Dirac CP phase is 227°, which turns out to be very close to the current best fit value of 220° from SuperK.
