An approximate likelihood for nuclear recoil searches with XENON1T data
An approximate likelihood for nuclear recoil searches with XENON1T data
复制标题
使用 XENON1T 数据进行核反冲搜索的近似可能性
DOI：
10.1140/epjc/s10052-022-10913-w
复制
发表时间：
2022
期刊：
影响因子：
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通讯作者：
Antochi, V. C.
中科院分区：
文献类型：
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作者：
Aprile, E.;Abe, K.;Agostini, F.;Ahmed Maouloud, S.;Alfonsi, M.;Althueser, L.;Andrieu, B.;Angelino, E.;Angevaare, J. R.;Antochi, V. C.
XENON合作组织已经公布了对特定暗物质-核子反冲光谱的严格限制，这些光谱来自暗物质反冲在液体氙探测器靶上。在本文中，我们提出了一个近似的可能性XENON 1 T 1吨年的核反冲搜索适用于任何核反冲谱。除了本文，我们还发布了使用我们提出的方法计算上限的数据和代码。在重构能量的仓中构造近似似然，沿每个仓中的信号期望沿着分布。这种方法可以用来计算近似的可能性，因此大多数统计结果的任何核反冲光谱。用这种方法计算近似结果比XENON 1 T的原始出版物中使用的可能性快大约三个数量级，其中为特定的反冲光谱系列设置了限制。使用这种相同的方法，我们包括玩具蒙特卡洛模拟派生binwise似然性为即将到来的XENONNT实验，同样可以用来评估任意核反冲签名的敏感性，在其最终的20吨年曝光。
The XENON collaboration has published stringent limits on specific dark matter – nucleon recoil spectra from dark matter recoiling on the liquid xenon detector target. In this paper, we present an approximate likelihood for the XENON1T 1 t-year nuclear recoil search applicable to any nuclear recoil spectrum. Alongside this paper, we publish data and code to compute upper limits using the method we present. The approximate likelihood is constructed in bins of reconstructed energy, profiled along the signal expectation in each bin. This approach can be used to compute an approximate likelihood and therefore most statistical results for any nuclear recoil spectrum. Computing approximate results with this method is approximately three orders of magnitude faster than the likelihood used in the original publications of XENON1T, where limits were set for specific families of recoil spectra. Using this same method, we include toy Monte Carlo simulation-derived binwise likelihoods for the upcoming XENONnT experiment that can similarly be used to assess the sensitivity to arbitrary nuclear recoil signatures in its eventual 20 t-year exposure.