Common Origin of mu-tau and CP Breaking in Neutrino Seesaw, Baryon Asymmetry, and Hidden Flavor Symmetry

Understand

We conjecture that all CP violations (both Dirac and Majorana types) arise from a common origin in neutrino seesaw.

• With this conceptually attractive and simple conjecture, we deduce that mu-tau breaking shares the common origin with all CP violations.
• We study the common origin of mu-tau and CP breaking in the Dirac mass matrix of seesaw Lagrangian (with right-handed neutrinos being mu-tau blind), which uniquely leads to inverted mass-ordering of light neutrinos.
• We then predict a very different correlation between the two small mu-tau breaking observables theta_{13}-0 and theta_{23}-45, which can saturate the present experimental upper limit on theta_{13}.