论文标题
CONUS实验中完全相干方向上的弹性中微子核对弹性中微子核的限制
Constraints on elastic neutrino nucleus scattering in the fully coherent regime from the CONUS experiment
论文作者
论文摘要
我们报告了从核反应堆发出的电子抗神经替那里的相干弹性散射的最佳限制。该测量是用位于德国布罗克夫核电站的3.9gwth反应堆核心位于171m处的圆锥探测器进行的。小于10 MEV的抗毒素能量可确保完全连贯的状态中的相互作用。分析的数据集包括248.7 kgd，打开了反应器，背景数据为58.8 kgd，反应堆关闭。由于锗的淬灭参数为k = 0.18，我们确定了在90％置信度下，感兴趣区域中的中微子事件的上微子数量上微子的上微子上限。在假设反应堆抗腐殖质的标准模型样相干散射的假设下，该新的CONUS数据集将高于K = 0.27的淬灭参数散布。
We report the best limit on coherent elastic scattering of electron antineutrinos emitted from a nuclear reactor off germanium nuclei. The measurement was performed with the CONUS detectors positioned at 17.1m from the 3.9GWth reactor core of the nuclear power plant in Brokdorf, Germany. The antineutrino energies of less than 10 MeV assure interactions in the fully coherent regime. The analyzed dataset includes 248.7 kgd with the reactor turned on and background data of 58.8 kgd with the reactor off. With a quenching parameter of k = 0.18 for germanium, we determined an upper limit on the number of neutrino events of 85 in the region of interest at 90% confidence level. This new CONUS dataset disfavors quenching parameters above k = 0.27, under the assumption of standard-model-like coherent scattering of the reactor antineutrinos.
