Search for Invisible Axion Dark Matter with the Axion Dark Matter Experiment
Search for Invisible Axion Dark Matter with the Axion Dark Matter Experiment
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DOI：
10.1103/physrevlett.120.151301
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发表时间：
2018-04-09
影响因子：
8.6
通讯作者：
Hilton, G. C.
中科院分区：
文献类型：
--
作者：
Du, N.;Force, N.;Hilton, G. C.
这封信报告的结果从晕镜搜索暗物质轴子与质量之间的2.66和2.81 μ eV。搜索排除了由不可见轴子的合理模型预测的轴子-光子耦合的范围。这种前所未有的灵敏度是通过在亚开尔文温度下操作大体积的晕圈镜来实现的，从而降低了热噪声以及用于信号功率读出的超低噪声超导量子干涉器件放大器的过量噪声。正在进行的搜索将提供几乎明确的测试不可见的轴子模型在广泛的轴子质量。
This Letter reports the results from a haloscope search for dark matter axions with masses between 2.66 and 2.81 mu eV. The search excludes the range of axion-photon couplings predicted by plausible models of the invisible axion. This unprecedented sensitivity is achieved by operating a large-volume haloscope at subkelvin temperatures, thereby reducing thermal noise as well as the excess noise from the ultralow-noise superconducting quantum interference device amplifier used for the signal power readout. Ongoing searches will provide nearly definitive tests of the invisible axion model over a wide range of axion masses.