Emission of single and few electrons in XENON1T and limits on light dark matter
Emission of single and few electrons in XENON1T and limits on light dark matter
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DOI：
10.1103/physrevd.106.022001
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发表时间：
2022-07-05
影响因子：
5
通讯作者：
Zopounidis, J. P.
中科院分区：
文献类型：
--
作者：
Aprile, E.;Abe, K.;Zopounidis, J. P.
延迟的单电子和少电子发射困扰着双相时间投影室，限制了它们寻找轻质量暗物质的潜力。本文探讨了XENON1T实验中这些事件的起源。延迟电子背景强度的表征表明，由此产生的排放量在时间和位置上与高能事件相关，并且可以有效地被否决。在这项工作中，我们扩展了以前的仅S2分析到单个电子。从这个分析中，在去除相关背景后，我们观察到了速率
Delayed single- and few-electron emissions plague dual-phase time projection chambers, limiting their potential to search for light-mass dark matter. This paper examines the origins of these events in the XENON1T experiment. Characterization of the intensity of delayed electron backgrounds shows that the resulting emissions are correlated, in time and position, with high-energy events and can effectively be vetoed. In this work we extend previous S2-only analyses down to a single electron. From this analysis, after removing the correlated backgrounds, we observe rates