Search for Low-Mass Axion Dark Matter with ABRACADABRA-10 cm
Search for Low-Mass Axion Dark Matter with ABRACADABRA-10 cm
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使用 ABRACADABRA-10 cm 搜索低质量轴子暗物质
DOI：
10.1103/physrevlett.127.081801
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发表时间：
2021
影响因子：
8.6
通讯作者：
Nguyen, Rachel
中科院分区：
文献类型：
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作者：
Salemi, Chiara P.;Foster, Joshua W.;Ouellet, Jonathan L.;Gavin, Andrew;Pappas, Kaliroë M. W.;Cheng, Sabrina;Richardson, Kate A.;Henning, Reyco;Kahn, Yonatan;Nguyen, Rachel
物理学中最紧迫的两个问题是暗物质的微观性质，它占宇宙质量的84%，以及中子电偶极矩的缺乏。这些问题将通过一种被称为量子色动力学（QCD）轴子的假设粒子的存在来解决。在这项工作中，我们探索的假设，轴子构成暗物质，使用ABRACADABRA-10厘米实验在宽带配置，具有世界领先的灵敏度。我们没有发现轴子的重要证据，我们提出了95%的轴子-光子耦合上限下降到世界领先的水平，代表在0.41-8.27 neV质量范围内的轴子最敏感的搜索之一。我们的工作为未来的实验铺平了一条直接的道路，这些实验能够证实或排除暗物质是由弦理论和大统一理论激发的质量范围内的QCD轴子的假设。
Two of the most pressing questions in physics are the microscopic nature of the dark matter that comprises 84% of the mass in the Universe and the absence of a neutron electric dipole moment. These questions would be resolved by the existence of a hypothetical particle known as the quantum chromodynamics (QCD) axion. In this work, we probe the hypothesis that axions constitute dark matter, using the ABRACADABRA-10 cm experiment in a broadband configuration, with world-leading sensitivity. We find no significant evidence for axions, and we present 95% upper limits on the axion-photon coupling down to the world-leading level, representing one of the most sensitive searches for axions in the 0.41–8.27 neV mass range. Our work paves a direct path for future experiments capable of confirming or excluding the hypothesis that dark matter is a QCD axion in the mass range motivated by string theory and grand unified theories.