Search for New Physics in Electronic Recoil Data from XENONnT

Search for New Physics in Electronic Recoil Data from XENONnT
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DOI:
10.1103/physrevlett.129.161805
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发表时间:
2022-10-13
影响因子:
8.6
通讯作者:
Zhu, T.
Zhu, T.
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Aprile, E.;Abe, K.;Zhu, T.

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我们报告了对XENONNT暗物质实验第一次科学运行的低能电子反冲数据的盲分析。新的子系统和增加的5.9吨液体氙靶将(1,30)keV搜索区域的背景降低到(15.8 +/- 1.3)事件/(吨x年x keV),这是暗物质探测器中达到的最低水平,比XENON 1 T低5倍。在1.16吨年的曝光量下,我们观察到没有超过背景,并对太阳轴子、增强的中微子磁矩和玻色子暗物质设定了严格的新限制。
We report on a blinded analysis of low-energy electronic recoil data from the first science run of the XENONnT dark matter experiment. Novel subsystems and the increased 5.9 ton liquid xenon target reduced the background in the (1, 30) keV search region to (15.8 +/- 1.3) events/(ton x year x keV), the lowest ever achieved in a dark matter detector and-5 times lower than in XENON1T. With an exposure of 1.16 ton-years, we observe no excess above background and set stringent new limits on solar axions, an enhanced neutrino magnetic moment, and bosonic dark matter.