Lepton Flavor Mixing and CP Symmetry

Understand

The strategy of constraining the lepton flavor mixing from remnant CP symmetry is investigated in a rather general way.

• The neutrino mass matrix generally admits four remnant CP transformations which can be derived from the measured lepton mixing matrix in the charged lepton diagonal basis.
• Conversely, the lepton mixing matrix can be reconstructed from the postulated remnant CP transformations.
• All mixing angles and CP violating phases can be completely determined by the full set of remnant CP transformations or three of them.