Observation of electron-antineutrino disappearance at Daya Bay
Observation of electron-antineutrino disappearance at Daya Bay
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DOI：
10.1063/1.4826754
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发表时间：
2013-11
期刊：
影响因子：
--
通讯作者：
J. Ling
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文献类型：
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作者：
J. Ling
大亚湾反应堆中微子实验测量到了θ13的非零值，其显著性为5.2个标准差。来自六个2.9 GWth反应堆的反中微子被部署在两个近的和一个远的地下实验霍尔斯的六个反中微子探测器探测到。在55天的43，000吨-GWth-天的生活时间曝光，10，416（80;376）电子反中微子候选人被检测到在远厅（近霍尔斯）。在远厅观测到的反中微子数与预期数之比为R = 0.940±0.011（stat）±0.004（syst）。仅速率分析发现，在三中微子框架中sin 22 θ13 = 0.092±0.016（stat）0.005（syst）。
The Daya Bay Reactor Neutrino Experiment has measured a nonzero value of θ13 with significance of 5.2 standard deviations. Antineutrinos from six 2.9 GWth reactors were detected in six antineutrino detectors deployed in two near and one far underground experimental halls. With a 43;000 ton-GWth-day live-time exposure in 55 days, 10,416 (80;376) electron-antineutrino candidates were detected at the far hall (near halls). The ratio of the observed to expected number of antineutrinos at the far hall is R = 0.940±0.011(stat)±0.004(syst). A rate-only analysis finds sin22θ13 = 0.092±0.016(stat)0.005(syst) in a three-neutrino framework.