Tri-Maximal vs Bi-Maximal Neutrino Mixing

TL;DR

This paper discusses the potential of tri-maximal and bi-maximal lepton mixing models to explain atmospheric and solar neutrino data, highlighting that bi-maximal fits data well while tri-maximal remains a plausible hypothesis.

Contribution

It compares tri-maximal and bi-maximal neutrino mixing models, emphasizing the viability of tri-maximal mixing as an a priori hypothesis.

Findings

Bi-maximal mixing fits data well.

Tri-maximal mixing is a plausible hypothesis considering terrestrial matter effects.

Data strongly suggest specific neutrino mixing patterns.

Abstract

It is argued that data from atmospheric and solar neutrino experiments point strongly to tri-maximal or bi-maximal lepton mixing. While (`optimised') bi-maximal mixing gives an excellent a posteriori fit to the data, tri-maximal mixing is an a priori hypothesis, which is not excluded, taking account of terrestrial matter effects.