论文标题
使用k波段的低温接收器搜索隐藏的冷暗物质
Search for hidden-photon cold dark matter using a K-band cryogenic receiver
论文作者
论文摘要
我们使用K频段频率范围的光谱系统搜索隐藏的冷暗物质（HP-CDM）。我们的系统包括平面金属板和低温接收器。这是搜索HP-CDM的第一次使用低温接收器。这种使用有助于减少热噪声。我们使用14.8厘米$^2 $的有效孔径区域记录了9.3小时的数据。数据中未发现信号。我们设置了在质量范围内的光子和HP-CDM之间混合参数的上限，范围为115.79至115.85 $ $ $ eV，$χ<1.8 $ - $ 4.3 \ $ 4.3 \ times 10^{ - 10} $，在95％的置信度下。这是迄今为止在考虑的质量范围内获得的最严格的上限。
We search for hidden-photon cold dark matter (HP-CDM) using a spectroscopic system in a K-band frequency range. Our system comprises a planar metal plate and cryogenic receiver. This is the first time a cryogenic receiver has been used in the search for HP-CDM. Such use helps reduce thermal noise. We recorded data for 9.3 hours using an effective aperture area of 14.8 cm$^2$. No signal was found in the data. We set upper limits for the parameter of mixing between the photon and HP-CDM in the mass range from 115.79 to 115.85 $μ$eV, $χ< 1.8$-$4.3 \times 10^{-10}$, at a 95% confidence level. This is the most stringent upper limit obtained to date in the considered mass range.
