Prospects for the Detection of the Diffuse Supernova Neutrino Background with the Experiments SK-Gd and JUNO
Prospects for the Detection of the Diffuse Supernova Neutrino Background with the Experiments SK-Gd and JUNO
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DOI：
10.3390/universe8030181
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发表时间：
2022-01
期刊：
影响因子：
2.9
通讯作者：
Yufeng Li;M. Vagins;M. Wurm
中科院分区：
文献类型：
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作者：
Yufeng Li;M. Vagins;M. Wurm
载有钆的超级神冈（SK-Gd）和即将启动的JUNO液体闪烁体探测器的出现标志着漫射超新星中微子背景（DSNB）的全球灵敏度的大幅提高。本文回顾了在这两个实验中最相关的DSNB搜索的检测器属性，并估计预期的信号和背景水平。基于这些输入，我们评估了两个实验单独和组合的灵敏度。使用简化的统计方法，我们发现SK-Gd和JUNO都有可能在测量的10年内达到DSNB信号的>3σ证据。他们的结果相结合可能会在未来十年内实现DSNB信号的5σ发现。
The advent of gadolinium-loaded Super-Kamiokande (SK-Gd) and of the soon-to-start JUNO liquid scintillator detector marks a substantial improvement in global sensitivity for the Diffuse Supernova Neutrino Background (DSNB). The present article reviews the detector properties most relevant for the DSNB searches in both experiments and estimates the expected signal and background levels. Based on these inputs, we evaluate the sensitivity of both experiments individually and combined. Using a simplified statistical approach, we find that both SK-Gd and JUNO have the potential to reach >3σ evidence of the DSNB signal within 10 years of measurement. Combination of their results is likely to enable a 5σ discovery of the DSNB signal within the next decade.