论文标题
搜索质量m $ _a = 43〜μ $ ev的质量的无形斧头暗物质与Quax-$aγ$实验
Search for invisible axion dark matter of mass m$_a=43~μ$eV with the QUAX--$aγ$ experiment
论文作者
论文摘要
Quax-$aγ$实验的吊带板由8.1 T磁铁内的无氧高导热率CU组成，并冷却至$ \ sim200 $ MK，用于搜索带有质量$ $ M_A \ simeq43〜μ \ simeq43〜μ \ text {ev {ev {ev} $的银河系轴的搜索。共振腔发出的功率用约瑟夫森参数放大器扩增，其噪声波动在标准量子极限处。 With the data collected in about 1 h at the cavity frequency $ν_c=10.40176$ GHz, the experiment reaches the sensitivity necessary for the detection of galactic QCD-axion, setting the $90\%$ confidence level limit to the axion-photon coupling $g_{aγγ}<0.639\times10^{-13}$ GeV$^{-1}$.
A haloscope of the QUAX--$aγ$ experiment composed of an oxygen-free high thermal conductivity-Cu cavity inside an 8.1 T magnet and cooled to $\sim200$ mK is put in operation for the search of galactic axion with mass $m_a\simeq43~μ\text{eV}$. The power emitted by the resonant cavity is amplified with a Josephson parametric amplifier whose noise fluctuations are at the standard quantum limit. With the data collected in about 1 h at the cavity frequency $ν_c=10.40176$ GHz, the experiment reaches the sensitivity necessary for the detection of galactic QCD-axion, setting the $90\%$ confidence level limit to the axion-photon coupling $g_{aγγ}<0.639\times10^{-13}$ GeV$^{-1}$.
