Lifting degenerate neutrino masses, threshold corrections and maximal mixing

TL;DR

This paper explores how threshold corrections in supersymmetric models can generate observed neutrino mixing angles from initially degenerate masses, including the possibility of fully radiative mixing.

Contribution

It demonstrates that threshold corrections can induce realistic neutrino mixing from degenerate masses, even with trivial initial mixing, within a supersymmetric framework.

Findings

Threshold corrections can break degeneracy in neutrino masses.

Radiative generation of mixing angles is possible from trivial initial conditions.

Supersymmetric models can account for observed neutrino oscillation parameters.

Abstract

In the scenario with degenerate neutrino masses at tree-level, we show how threshold corrections with either non-trivial or trivial mixing at tree-level have the power to generate the observed deviations from a degenerate spectrum. Moreover, it is possible to also generate the mixing fully radiatively when there is trivial mixing at tree-level. We give a brief overview over the topic and discuss the outcome of threshold corrections for degenerate neutrino masses in a supersymmetric model. A detailed description can be found in [arXiv:1412.4585].