论文标题
在雷诺（Reno
Measurement of Reactor Antineutrino Flux and Spectrum at RENO
论文作者
论文摘要
Reno实验报告了来自Hanbit核电站的六个反应堆的反应堆电子抗腐殖质\（$ \OverlineNν_e$）的磁通和能谱。测量结果使用966 \，094 \，（116 \，111）\，$ \overlineν_e$候选事件，背景分数为2.39 \％\，（5.13 \％），（5.13 \％），在近\，（FAR）detector，（FAR）detctor，（FAR），从2011年8月到2020年3月至2020年。 （5.852 $ \，\ pm \，$ 0.124 $）\ times 10^{ - 43} $ \，cm $^2 $/fission，对应于0.941 \，$ \ pm $ 0.019 HUBER和MUELLER（HM）模型。通过展开测得的IBD提示频谱，可以获得反应堆$ \overlineν_e$频谱。获得的中微子光谱显示出相对于HM预测，MEV左右显示出明显的过量。获得的反应堆$ \overlineν_e$频谱将有助于理解未知的中微子属性和反应堆模型。观察到的差异表明，下一轮精确测量和当前反应器$ \overlineν_e$模型的修改。
The RENO experiment reports measured flux and energy spectrum of reactor electron antineutrinos\,($\overlineν_e$) from the six reactors at Hanbit Nuclear Power Plant. The measurements use 966\,094\,(116\,111)\,$\overlineν_e$ candidate events with a background fraction of 2.39\%\,(5.13\%), acquired in the near\,(far) detector, from August 2011 to March 2020. The inverse beta decay (IBD) yield is measured as (5.852$\,\pm\,$0.124$) \times 10^{-43}$\,cm$^2$/fission, corresponding to 0.941\,$\pm$ 0.019 of the prediction by the Huber and Mueller (HM) model. A reactor $\overlineν_e$ spectrum is obtained by unfolding a measured IBD prompt spectrum. The obtained neutrino spectrum shows a clear excess around 6\,MeV relative to the HM prediction. The obtained reactor $\overlineν_e$ spectrum will be useful for understanding unknown neutrino properties and reactor models. The observed discrepancies suggest the next round of precision measurements and modification of the current reactor $\overlineν_e$ models.
