Generalized CP Symmetry and One-Zero Textures in the Neutrino Mass Matrix
Combines one-zero textures of the Majorana neutrino mass matrix with a generalized CP symmetry based on a complex tribimaximal mixing matrix to build predictive neutrino mass models. The construction correlates the mixing angles, Dirac and Majorana CP phases, and mass eigenstates, and predicts the effective mass probed by neutrinoless double beta decay, which combined with cosmological mass bounds disfavors the inverted hierarchy.
2501.00776
The neutrino mass matrix encodes the masses and mixings of the three neutrinos; imposing a 'one-zero texture' - setting one independent entry to zero - reduces its free parameters and yields testable…