Global status of neutrino oscillation parameters after Neutrino-2012

preprint2012arXivOpen access

Abstract

Here we update the global fit of neutrino oscillations in arXiv:1103.0734 and arXiv:1108.1376 including the recent measurements of reactor antineutrino disappearance reported by the Double Chooz, Daya Bay and RENO experiments, together with latest MINOS and T2K appearance and disappearance results, as presented at the Neutrino-2012 conference. We find that the preferred global fit value of θ13θ_{13} is quite large: sin⁡2θ13≃0.025\sin^2θ_{13} \simeq 0.025 for normal and inverted neutrino mass ordering, with θ13=0θ_{13} = 0 now excluded at more than 10σσ. The impact of the new θ13θ_{13} measurements over the other neutrino oscillation parameters is discussed as well as the role of the new long-baseline neutrino data and the atmospheric neutrino analysis in the determination of a non-maximal atmospheric angle θ23θ_{23}.

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