Global analysis of neutrino masses, mixings and phases: entering the era of leptonic CP violation searches

TL;DR

This paper conducts a comprehensive analysis of neutrino oscillation data, highlighting correlations between mixing angles and CP-violation phase, and providing insights into neutrino properties relevant for upcoming CP violation experiments.

Contribution

It provides the first global analysis incorporating recent high-precision measurements of theta_13 and explores correlations with theta_23 and delta.

Findings

Hints for theta_23< pi/4

Possible indication of delta ~ pi

No significant hierarchy dependence

Abstract

We perform a global analysis of neutrino oscillation data, including high-precision measurements of the neutrino mixing angle theta_13 at reactor experiments, which have confirmed previous indications in favor of theta_13>0. Recent data presented at the Neutrino 2012 Conference are also included. We focus on the correlations between theta_13 and the mixing angle theta_23, as well as between theta_13 and the neutrino CP-violation phase delta. We find interesting indications for theta_23< pi/4 and possible hints for delta ~ pi, with no significant difference between normal and inverted mass hierarchy.