High Scale Mixing Unification for Dirac Neutrinos

Understand

Starting with high scale mixing unification hypothesis, we investigate the renormalization group evolution of mixing parameters and masses for Dirac type neutrinos.

• Following this hypothesis, the PMNS mixing angles and phase are taken to be identical to the CKM ones at a unifying high scale.
• Then, they are evolved to a low scale using renormalization-group equations.
• The notable feature of this hypothesis is that renormalization group evolution with quasi-degenerate mass pattern can explain largeness of leptonic mixing angles even for Dirac neutrinos.