论文标题
使用18T磁铁卤素搜索无形的斧头暗物质
Searching for Invisible Axion Dark Matter with an 18T Magnet Haloscope
论文作者
论文摘要
我们报告了使用18 \，高温超导磁铁悬挂仪对轴线暗物质的第一个搜索结果。扫描频率范围为4.7789至4.8094 \ GHz。未观察到与银河光环暗物质轴相一致的显着信号。结果设置了轴轴 - 光子偶联（$ g_ {aγγ} $）的最佳上限，在19.764至19.771 \，$μ$ ev（19.863至19.890 \，19.890 \，$μ$ EV）中，在1.5 $ \ times | g _ $ g _ $ g _ $ $ $ $ $ $ $ $ $ $ $ $ $ { （1.7 $ \ times | g_ {aγγ}^{\ text {ksvz}} | $）和19.772至19.863 \，$μ$ $ ev，2.7 $ \ times | g_ g_ {aγγ}^{通过在现有的卤素实验中使用最强的磁场并使用Josephson参数转换器实现了微波炉信号的低噪声放大，可以实现暗轴的高质量区域的这种显着灵敏度。
We report the first search results for axion dark matter using an 18\,T high-temperature superconducting magnet haloscope. The scan frequency ranges from 4.7789 to 4.8094\,GHz. No significant signal consistent with the Galactic halo dark matter axion is observed. The results set the best upper bound of axion-photon-photon coupling ($g_{aγγ}$) in the mass ranges of 19.764 to 19.771\,$μ$eV (19.863 to 19.890\,$μ$eV) at 1.5$\times|g_{aγγ}^{\text{KSVZ}}|$ (1.7$\times|g_{aγγ}^{\text{KSVZ}}|$), and 19.772 to 19.863\,$μ$eV at 2.7 $\times|g_{aγγ}^{\text{KSVZ}}|$ with 90\% confidence level, respectively. This remarkable sensitivity in the high mass region of dark matter axion is achieved by using the strongest magnetic field among the existing haloscope experiments and realizing a low-noise amplification of microwave signals using a Josephson parametric converter.
