Majorana neutrino mass matrix with CP symmetry breaking

TL;DR

This paper explores the structure of the Majorana neutrino mass matrix considering CP symmetry breaking, using recent data on neutrino mixing angles and analyzing phase effects through bottom-up and top-down approaches.

Contribution

It introduces a comprehensive analysis of the Majorana neutrino mass matrix with CP violation, incorporating recent experimental data and addressing phase ambiguities.

Findings

Identified possible shapes of the Majorana neutrino mass matrix with CP violation.

Analyzed the impact of Dirac and Majorana phases on the mass matrix.

Provided methodological approaches for matrix reconstruction from experimental data.

Abstract

From the new existing data with not vanishing theta13 mixing angle we determine the possible shape of the Majorana neutrino mass matrix. We assume that CP symmetry is broken and all Dirac and Majorana phases are taken into account. Two possible approaches "bottom-up" and "top down" are presented. The problem of unphysical phases is examined in detail.