Search for Dark Photon Dark Matter in the Mass Range 74-110 ueV with a Cryogenic Millimeter-Wave Receiver
Search for Dark Photon Dark Matter in the Mass Range 74-110 ueV with a Cryogenic Millimeter-Wave Receiver
复制标题
使用低温毫米波接收器搜索质量范围 74-110 ueV 的暗光子暗物质
DOI：
10.1103/physrevlett.130.071805
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发表时间：
2023
影响因子：
8.6
通讯作者：
DOSUE-RR Collaboration
中科院分区：
文献类型：
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作者：
Kotaka S.;Adachi S.;Fujinaka R.;Honda S.;Nakata H.;Seino Y.;Sueno Y.;Sumida T.;Suzuki J.;Tajima O.;Takeichi S.;DOSUE-RR Collaboration
我们使用低温毫米波接收机来寻找暗光子暗物质（DPDM）。DPDM与电磁场有动力学耦合，耦合常数为，在金属板表面转换为普通光子。我们在对应于质量范围的频率范围18-26.5 GHz中搜索这种转换的信号。我们没有观察到显著的信号过量，这使我们能够将其上限设定为95%的置信水平。这是迄今为止最严格的约束，比宇宙学约束更严格。通过采用低温光路和快速光谱仪，从以前的研究中得到了改进。
We search for the dark photon dark matter (DPDM) using a cryogenic millimeter-wave receiver. DPDM has a kinetic coupling with electromagnetic fields with a coupling constant ofand is converted into ordinary photons at the surface of a metal plate. We search for signal of this conversion in the frequency range 18–26.5 GHz, which corresponds to the mass range. We observed no significant signal excess, allowing us to set an upper bound ofat 95% confidence level. This is the most stringent constraint to date and tighter than cosmological constraints. Improvements from previous studies are obtained by employing a cryogenic optical path and a fast spectrometer.