An Overview of Neutrino Mixing

TL;DR

This paper reviews recent experimental progress in neutrino mixing, highlighting implications for various theoretical models, and discusses how new data constrains the landscape of possible neutrino mixing theories.

Contribution

It provides a comprehensive overview of recent experimental findings and their impact on existing neutrino mixing models, emphasizing the narrowing of viable theories.

Findings

Hints for sterile neutrinos

Large $ heta_{13}$ angle observed

Sensitivity approaching for $ heta_{23}$ and $ ext{CP}$ phase $oldsymbol{oldsymbol{ heta_{13}}}$

Abstract

We present a concise review of the recent important experimental developments on neutrino mixing (hints for sterile neutrinos, large $\theta_{13}$, possible non maximal $\theta_{23}$, approaching sensitivity on $\delta_{CP}$) and their implications on models of neutrino mixing. The new data disfavour many models but the surviving ones still span a wide range going from Anarchy (no structure, no symmetry in the lepton sector) to a maximum of symmetry, as for the models based on discrete non-abelian flavour groups.