Speaker
Description
The $\mu\tau$-reflection symmetry is a simple symmetry capable of predicting all the unknown CP phases of the lepton sector and the atmospheric angle but too simple to predict the absolute neutrino mass scale or the mass ordering.
By combining this symmetry with a discrete abelian symmetry in a nontrivial way
we can additionally enforce a texture-zero for the heavy neutrino mass matrix which is transmitted to the inverse of the light neutrino mass matrix.
A highly predictive scenario emerges where the lightest neutrino mass is fixed to be in the few meV range for one solution with normal ordering (NO) and two
solutions with inverted ordering (IO). Another NO solution allows the lightest
mass to be in the region from few meV to tens of meV.
Moreover, the heavy neutrino sector is controlled solely by two free parameters.
The effective mass for neutrinoless double beta decay can be predicted and
leptogenesis is successful for some solutions and some parameter regions.
