What we (would like to) know about the neutrino mass

TL;DR

This paper reviews current knowledge on neutrino mass and mixing parameters, highlighting recent hints of a non-zero theta_13, and discusses methods to constrain uncertainties in absolute neutrino mass measurements and neutrinoless double beta decay.

Contribution

It provides an updated synthesis of neutrino oscillation parameters and explores approaches to reduce uncertainties in key neutrino mass observables.

Findings

Hints of theta_13 > 0 are discussed.

Updated values for neutrino mixing parameters are presented.

Approaches to constrain neutrinoless double beta decay uncertainties are proposed.

Abstract

We present updated values for the mass-mixing parameters relevant to neutrino oscillations, with particular attention to emerging hints in favor of theta_13>0. We also discuss the status of absolute neutrino mass observables, and a possible approach to constrain theoretical uncertainties in neutrinoless double beta decay. Desiderata for all these issues are also briefly mentioned.