Measurement of the cosmic muon annual and diurnal flux variation with the COSINE-100 detector
Measurement of the cosmic muon annual and diurnal flux variation with the COSINE-100 detector
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DOI：
10.1088/1475-7516/2021/02/013
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发表时间：
2021-02-01
影响因子：
6.4
通讯作者：
Yu, G. H.
中科院分区：
文献类型：
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作者：
Prihtiadi, H.;Adhikari, G.;Yu, G. H.
我们使用2016年9月至2019年7月期间获得的952天COSINE-100数据报告了阳阳地下实验室（Y2 L）宇宙射线μ子速率的年度和昼夜调制测量。的μ介子率与大气温度的相关性进行了观察，并确定其幅度的μ介子率。有效大气温度和μ介子速率变化与测得的有效温度系数α（T）= 0.82 +/- 0.10正相关。这一结果与大气中介子产生的模型是一致的。我们还通过比较一小时的间隔来寻找地下μ子速率的昼夜调制。没有观察到明显的μ介子速率的昼夜调制。
We report measurements of annual and diurnal modulations of the cosmic-ray muon rate in the Yangyang underground laboratory (Y2L) using 952 days of COSINE-100 data acquired between September 2016 and July 2019. A correlation of the muon rate with the atmospheric temperature is observed and its amplitude on the muon rate is determined. The effective atmospheric temperature and muon rate variations are positively correlated with a measured effective temperature coefficient of alpha(T) = 0.82 +/- 0.10. This result is consistent with a model of meson production in the atmosphere. We also searched for a diurnal modulation in the underground muon rate by comparing one-hour intervals. No significant diurnal modulation of the muon rate was observed.