AI 中文总结
本文评估超级神冈与超神冈探测器对弥散超新星中微子背景的灵敏度，发现超神冈可在十年内实现统计显著的发现，并强调精确处理中微子振荡的重要性。
AI 中文摘要
探测弥散超新星中微子背景（DSNB）是当前及下一代中微子实验的主要目标之一。基于超级神冈（Super-Kamiokande，SK）合作组已发表的结果，我们研究了当前及未来的水切伦科夫探测器对DSNB的灵敏度。我们重现了现有的约束条件，并估算了SK十年数据以及下一代水切伦科夫探测器（如超神冈，Hyper-Kamiokande，HK）对DSNB的灵敏度。我们发现，即使增加曝光量，SK的灵敏度仍然相对有限，而HK则有可能在十年内实现对DSNB具有统计显著性的发现。在此过程中，我们对相关的大气中微子背景进行了详细研究，并论证了在处理中微子振荡和传播时，精确的处理对于正确推断DSNB灵敏度及其通量测量至关重要。
英文摘要
The detection of the Diffuse Supernova Neutrino Background (DSNB) is one of the main goals of the current and the next generation of neutrino experiments. Based on results published by the Super-Kamiokande (SK) collaboration, we study the sensitivity of current and future water Cherenkov detectors to the DSNB. We reproduce current constraints and estimate the sensitivity to the DSNB of ten years of SK data and of a next-generation water-Cherenkov detector like Hyper-Kamiokande (HK). We find that, even with increased exposure, SK's sensitivity is relatively modest, while HK has the potential to deliver a statistically significant discovery of the DSNB in ten years. Along the way, we perform a detailed study of the relevant atmospheric neutrino backgrounds and argue that an accurate treatment of neutrino oscillations and propagation is essential when it comes to properly inferring the sensitivity to the DSNB and measuring its flux.
Comments9 pages, 9 figures, 4 appendices
