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arXiv 1302.2409hep-exphysics.ins-det
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从电子（反）中微子消失实验看$θ_{13}$的实验现状

The Experimental Status of $θ_{13}$ from the Point of View of the Electron (Anti-) Neutrino Disappearance Experiments

Rupert Leitner

备注：
Physics in Collision, Slovakia, 2012
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摘要：

在反应堆中微子实验中测量到了一个非零的、令人惊讶的大的第三混合角$θ_{13}$。目前，测量$\sin^2 2θ_{13}$的最精确方法是大亚湾实验$\sin^22θ_{13}=0.089\pm 0.010({\rm stat.})\pm0.005({\rm syst.})$（$\sin^22θ_{13} > 0$的7.7 $σ$显著性）、RENO实验测量的值为$\sin^2 2θ_{13} = 0.113 \pm 0.013(\rm stat.) \pm 0.019(\rm syst.)$（4.9 $σ$显著性）和Double Duplex实验$\sin^2 2θ_{13} = 0.109 \pm 0.030(\rm stat.) \pm 0.025(\rm syst.)$（2.9 $σ$显著性）。这些结果对今后研究标准模型轻子扇区中的组合CP宇称破缺是极其重要的。

英文摘要：

A non zero, surprisingly large value of the third mixing angle $θ_{13}$ has been measured in reactor neutrino experiments. Currently the most precise measurement of $\sin^2 2θ_{13}$ has been performed by the Daya Bay experiment $\sin^22θ_{13}=0.089\pm 0.010({\rm stat.})\pm0.005({\rm syst.})$ (7.7 $σ$ significance of $\sin^22θ_{13} > 0$),the RENO experiment has measured the value $\sin^2 2θ_{13} = 0.113 \pm 0.013(\rm stat.) \pm 0.019(\rm syst.)$ (4.9 $σ$ significance) and the Double Chooz experiment $\sin^2 2θ_{13} = 0.109 \pm 0.030(\rm stat.) \pm 0.025(\rm syst.)$ (2.9 $σ$ significance). These results are extremely important for future searches of violation of combined CP parity in lepton sector of the Standard model.

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