Recent Developments in Models for Neutrino Masses and Mixings, Stefan Antusch (Basel)

We discuss new developments towards the construction of models for neutrino
masses and mixings in the context of Grand Unified Theories (GUTs). We review
the situation after the Daya Bay experiment has measured the last unknown mixing angle, θ^PMNS₁₃ , and discuss possibilities for explaining the observed value in
flavour models. As an explicit example, we present a recently constructed GUT
flavour model. The model has 14 parameters and fits the 18 measured quark and
lepton flavour observables with a χ²/d.o.f. of 2.0. From a Markov Chain Monte
Carlo analysis we have derived the highest posterior density 1σ intervals for all
parameters and observables. With 14 parameters and 18 measured observables
plus the currently unmeasured leptonic Dirac CP phase and one Majorana phase,
the model features 6 predictions. This will allow to test the model with the forthcoming results of present and future experiments.