Global neutrino data and recent reactor fluxes: status of three-flavour oscillation parameters

Abstract

We present the results of a global neutrino oscillation data analysis within the three-flavour framework. We include latest results from the MINOS long-baseline experiment (including electron neutrino appearance as well as anti-neutrino data), updating all relevant solar (SK II+III), atmospheric (SK I+II+III) and reactor (KamLAND) data. Furthermore, we include a recent re-calculation of the anti-neutrino fluxes emitted from nuclear reactors. These results have important consequences for the analysis of reactor experiments and in particular for the status of the mixing angle ${\theta }_{13}$. In our recommended default analysis we find from the global fit that the hint for non-zero ${\theta }_{13}$ remains weak, at 1.8$\sigma$ for both neutrino mass hierarchy schemes. However, we discuss in detail the dependence of these results on assumptions concerning the reactor neutrino analysis.

15 pages, 10 figures and 2 tables, v2: corrected version, main conclusions unchanged, references added

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