Three-flavour neutrino oscillation update

TL;DR

This paper reviews the current status of three-flavour neutrino oscillations, incorporating recent experimental data to update key oscillation parameters and constraints on the mixing angle θ13.

Contribution

It provides the latest global analysis of neutrino oscillation data, updating the values of mixing angles and mass-squared differences, especially constraining θ13.

Findings

θ13 is consistent with zero within 0.9σ

Upper bound on sin^2θ13 is 0.035 at 90% CL

Updated values for solar and atmospheric oscillation parameters

Abstract

We review the present status of three-flavour neutrino oscillations, taking into account the latest available neutrino oscillation data presented at the Neutrino 2008 Conference. This includes the data released this summer by the MINOS collaboration, the data of the neutral current counter phase of the SNO solar neutrino experiment, as well as the latest KamLAND and Borexino data. We give the updated determinations of the leading 'solar' and 'atmospheric' oscillation parameters. We find from global data that the mixing angle $\theta_{13}$ is consistent with zero within $0.9\sigma$ and we derive an upper bound of $\sin^2\theta_{13} < 0.035 (0.056)$ at 90% CL (3$\sigma$).