Where we are on ${\theta }_{13}$: addendum to "Global neutrino data and recent reactor fluxes: status of three-flavour oscillation parameters"

Abstract

In this addendum to arXiv:1103.0734 we consider the recent results from long-baseline ${\nu }_{\mu }\to {\nu }_e$ searches at the T2K and MINOS experiments and investigate their implications for the mixing angle ${\theta }_{13}$ and the leptonic Dirac CP phase $\delta$. By combining the $2.5\sigma$ indication for a non-zero value of ${\theta }_{13}$ coming from T2K data with global neutrino oscillation data we obtain a significance for ${\theta }_{13}>0$ of about $3\sigma$ with best fit points ${\sin }^2{\theta }_{13}=0.013(0.016)$ for normal (inverted) neutrino mass ordering. These results depend somewhat on assumptions concerning the analysis of reactor neutrino data.

Comments: 5 pages, 2 figures and 1 table