Updated fit to three neutrino mixing: exploring the accelerator-reactor complementarity
Updated fit to three neutrino mixing: exploring the accelerator-reactor complementarity
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DOI：
10.1007/jhep01(2017)087
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发表时间：
2016-11
影响因子：
5.4
通讯作者：
I. Esteban;M. Gonzalez-Garcia;M. Maltoni;I. Martinez-Soler;T. Schwetz
中科院分区：
文献类型：
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作者：
I. Esteban;M. Gonzalez-Garcia;M. Maltoni;I. Martinez-Soler;T. Schwetz
我们对截至2016年秋季的全球中微子振荡数据进行了组合拟合，并在三个中微子振荡的情况下给出了六个振荡参数的更新允许范围。我们讨论了加速器和反应堆实验数据样本的一致组合与部分组合之间的差异。我们通过对长基线加速器和反应堆数据进行蒙特卡罗研究，量化了在确定不太精确的已知参数θ 23， δ CP和中微子质量排序中的置信度。我们发现对质量排序和θ 23的灵敏度小于1σ。最大θ 23混合允许在略高于90% CL。CP违背相的最佳拟合点在270左右，在略高于1σ处允许CP守恒，在99%左右的正序点和更高的倒序点处，δ CP的值不理想。
We perform a combined fit to global neutrino oscillation data available as of fall 2016 in the scenario of three-neutrino oscillations and present updated allowed ranges of the six oscillation parameters. We discuss the differences arising between the consistent combination of the data samples from accelerator and reactor experiments compared to partial combinations. We quantify the confidence in the determination of the less precisely known parameters θ 23, δ CP, and the neutrino mass ordering by performing a Monte Carlo study of the long baseline accelerator and reactor data. We find that the sensitivity to the mass ordering and the θ 23 octant is below 1σ. Maximal θ 23 mixing is allowed at slightly more than 90% CL. The best fit for the CP violating phase is around 270, CP conservation is allowed at slightly above 1σ, and values of δ CP≃ 90 are disfavored at around 99% CL for normal ordering and higher CL for inverted ordering.