Deviations from Tri-Bimaximality and Quark-Lepton Complementarity

TL;DR

This paper investigates deviations from tri-bimaximal mixing and quark-lepton complementarity in neutrino physics, analyzing current data and predicting correlations among mixing angles, highlighting potential future experimental tests.

Contribution

It introduces a model-independent analysis of deviations from TBM and QLC, including a new ratio and predicted correlations among leptonic mixing angles.

Findings

Current data approximates TBM but not QLC at 1σ

Deviations from TBM and QLC are correlated

Predicted correlations among leptonic mixing angles

Abstract

We study deviations from tri-bimaximality (TBM) and quark-lepton complementarity (QLC) in a model independent way. The current neutrino experimental data is well approximated by tri-bimaximal generation mixing but the QLC relations are not satisfied with each data of 1$\sigma$ level. This means that there exist deviations from the complementarity. The same fact for the TBM might be checked in the future neutrino experiments. We discuss such deviations from the TBM and QLC, simultaneously. A new ratio between the deviations is introduced, and some interesting points are presented. We also show predicted correlations among leptonic mixing angles at the points.