论文标题
反应堆抗肿瘤的相干弹性中微子核散射的测量
Measurement of Coherent Elastic Neutrino-Nucleus Scattering from reactor antineutrinos
论文作者
论文摘要
描述了3千克超低噪声得测器的96.4天暴露于电力核反应堆中的抗神经局的高通量。与仅背景模型相比，发现数据中有一致的弹性弹性中微子 - 核散射（CE $ν$ ns）组件的非常强烈的偏好（$ p <1.2 \ times10^{ - 3} $）。在反应堆中断期间，在25天的操作中，没有可见这种效果。最适合的CE $ν$ NS信号与基于最近对亚元素核电弯武器反应的响应的表征非常吻合。订单60 \％与标准模型CE $ν$ ns预测的偏差可以使用当前数据排除。检查了锗淬灭因子，中微子能量谱和背景模型中的不确定性。
The 96.4 day exposure of a 3 kg ultra-low noise germanium detector to the high flux of antineutrinos from a power nuclear reactor is described. A very strong preference ($p<1.2\times10^{-3}$) for the presence of a coherent elastic neutrino-nucleus scattering (CE$ν$NS) component in the data is found, when compared to a background-only model. No such effect is visible in 25 days of operation during reactor outages. The best-fit CE$ν$NS signal is in good agreement with expectations based on a recent characterization of germanium response to sub-keV nuclear recoils. Deviations of order 60\% from the Standard Model CE$ν$NS prediction can be excluded using present data. Standing uncertainties in models of germanium quenching factor, neutrino energy spectrum, and background are examined.
