NASDUCK': 用零轴磁力计对超轻暗光子暗物质的实验室限制
NASDUCK': Laboratory Limits on Ultralight Dark-Photon Dark Matter with Null-Axis Magnetometry
AI总结：
NASDUCK利用零轴磁力计在特定质量范围内对暗光子暗物质进行实验，设定了新的实验室限制并提高了灵敏度。
摘要：
暗光子是一种有说服力的超轻暗物质候选者，可能通过动能混合与标准模型耦合。我们使用一个大型导电屏蔽室内的三轴磁力计，在质量范围$ m_{A'}c^2 = 4\times10^{-12} $-$ 2\times10^{-9}\,\mathrm{eV} $（1-500 kHz）内搜索暗光子暗物质。我们对动能混合参数$ ε $设定了新的实验室限制，比之前的实验室界限提高了多达三个数量级。我们的搜索利用一个轴定义的零响应作为噪声参考；减法过程降低了噪声底面并提高了灵敏度。这些结果在该质量范围内建立了最强的实验室限制，并展示了如何通过零轴磁力计扩大对超轻向量暗物质的地面搜索。
英文摘要：
The dark photon is a well-motivated ultralight dark-matter candidate that may couple to the Standard Model through kinetic mixing. We search for dark-photon dark matter in the mass range $m_{A'}c^2 = 4\times10^{-12}$-$2\times10^{-9}\,\mathrm{eV}$ (1-500 kHz) using a three-axis magnetometer inside a large conductive shielded room. We set new laboratory limits on the kinetic-mixing parameter $ε$, improving upon previous laboratory bounds by up to three orders of magnitude. Our search exploits a geometry-defined null response along one axis as a noise reference; a subtraction procedure reduces the noise floor and improves sensitivity. These results establish the strongest laboratory constraints in this mass range and illustrate how null-axis magnetometry can broaden terrestrial searches for ultralight vector dark matter.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
