Quiskamp Aaron, McAllister Ben T, Altin Paul, Ivanov Eugene N, Goryachev Maxim, Tobar Michael E
ARC Centre of Excellence for Engineered Quantum Systems and ARC Centre of Excellence For Dark Matter Particle Physics, Department of Physics, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia.
ARC Centre of Excellence for Dark Matter Particle Physics, Swinburne University of Technology, John St., Hawthorn, VIC 3122, Australia.
Sci Adv. 2022 Jul 8;8(27):eabq3765. doi: 10.1126/sciadv.abq3765. Epub 2022 Jul 6.
The standard model axion seesaw Higgs portal inflation (SMASH) model is a well-motivated, self-contained description of particle physics that predicts axion dark matter particles to exist within the mass range of 50 to 200 micro-electron volts. Scanning these masses requires an axion haloscope to operate under a constant magnetic field between 12 and 48 gigahertz. The ORGAN (Oscillating Resonant Group AxioN) experiment (in Perth, Australia) is a microwave cavity axion haloscope that aims to search the majority of the mass range predicted by the SMASH model. Our initial phase 1a scan sets an upper limit on the coupling of axions to two photons of ∣∣ ≤ 3 × 10 per giga-electron volts over the mass range of 63.2 to 67.1 micro-electron volts with 95% confidence interval. This highly sensitive result is sufficient to exclude the well-motivated axion-like particle cogenesis model for dark matter in the searched region.
标准模型轴子跷跷板希格斯门户暴胀（SMASH）模型是一种动机充分、自成体系的粒子物理学描述，它预测轴子暗物质粒子存在于50至200微电子伏特的质量范围内。扫描这些质量需要轴子探测仪在12至48吉赫兹的恒定磁场下运行。ORGAN（振荡共振群轴子）实验（位于澳大利亚珀斯）是一种微波腔轴子探测仪，旨在搜索SMASH模型预测的大部分质量范围。我们最初的1a阶段扫描在63.2至67.1微电子伏特的质量范围内，以95%的置信区间设定了轴子与两个光子耦合的上限，即每吉电子伏特||≤3×10 。这一高度灵敏的结果足以排除在所搜索区域中动机充分的暗物质类轴子粒子共生成模型。
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