The model that predicts the maximal 2-3 mixing and CP violation for neutrinos is revisited

TL;DR

This paper revisits a neutrino mass matrix model from 2000, analyzing its predictions of maximal 2-3 mixing and CP violation in light of recent T2K experimental data, and explores deviations from these maximal values.

Contribution

It updates a longstanding neutrino mass model to incorporate recent experimental results and derives relations for deviations from maximal mixing and CP violation.

Findings

Model predicts maximal 2-3 mixing and CP violation under certain conditions.

Relaxing these conditions leads to predictable deviations from maximal values.

Relations between mixing angles and CP violation are established for typical cases.

Abstract

The model of the neutrino mass matrix which we proposed in 2000 is revisited in the light of the recent T2K experiments. This model has the special property that it predicts the maximal 2-3 mixing and CP violation under the some simple condition. In this model, if the condition is relaxed, the 2-3 angle and the CP violation deviate from their maximal values and they are related. We present such relations for typical cases.