Global status of neutrino oscillation parameters after Neutrino-2012
Global status of neutrino oscillation parameters after Neutrino-2012
复制标题
DOI：
10.1103/physrevd.86.073012
复制
发表时间：
2012-05
影响因子：
5
通讯作者：
D. V. Forero;M. T'ortola;J. Valle
中科院分区：
文献类型：
--
作者：
D. V. Forero;M. T'ortola;J. Valle
在这里，我们更新了arXiv：1103.0734和arXiv：1108.1376中中微子振荡的整体拟合，包括最近由Double Escherz，大亚湾和里诺实验报告的反应堆反中微子消失的测量结果，以及最新的MINOS和T2 K出现和消失的结果，如Neutrino-2012会议所示。我们发现，首选的全球拟合值$\theta_{13}$是相当大的：$\sin^2\theta_{13} \simeq 0.025$的正常和倒置的中微子质量排序，与$\theta_{13} = 0$现在排除在10 $\sigma $。讨论了新的$\theta_{13}$测量对其他中微子振荡参数的影响，以及新的长基线中微子数据和大气中微子分析在确定非最大大气角$\theta_{23}$中的作用。
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 $\theta_{13}$ is quite large: $\sin^2\theta_{13} \simeq 0.025$ for normal and inverted neutrino mass ordering, with $\theta_{13} = 0$ now excluded at more than 10$\sigma$. The impact of the new $\theta_{13}$ 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 $\theta_{23}$.