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arXiv 2102.06722hep-exhep-ph
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用ABRACADABRA-10 cm探测低质量轴子暗物质

The search for low-mass axion dark matter with ABRACADABRA-10cm

Chiara P. Salemi, Joshua W. Foster, Jonathan L. Ouellet, Andrew Gavin, Kaliroe M. W. Pappas, Sabrina Cheng, Kate A. Richardson, Reyco Henning, Yonatan Kahn, Rac… 展开作者

Chiara P. Salemi, Joshua W. Foster, Jonathan L. Ouellet, Andrew Gavin, Kaliroe M. W. Pappas, Sabrina Cheng, Kate A. Richardson, Reyco Henning, Yonatan Kahn, Rachel Nguyen, Nicholas L. Rodd, Benjamin R. Safdi, Lindley Winslow

备注：
17 pages, 12 figures
发表信息：
Phys. Rev. Lett. 127, 081801 (2021)
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摘要：

物理学中最紧迫的两个问题是占宇宙质量84%的暗物质的微观本质和中子电偶极矩的缺失。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。我们没有发现有意义的证据，轴子，我们提出了95%的上限的轴子光子耦合下降到世界领先的水平$g_{aγγ}<3.2 \times10^{-11}$ GeV $^{-1}$，代表最敏感的搜索轴子在0.41 - 8.27 neV的质量范围。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质量范围内的QCD轴子的假设，该假设是由弦论和大统一理论激发的。

英文摘要：

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-10cm 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 $g_{aγγ}<3.2 \times10^{-11}$ GeV$^{-1}$, 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.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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