在对199hg自由旋转预动力信号的侧带分析中搜索超轻轴线暗物质

论文标题

在对199hg自由旋转预动力信号的侧带分析中搜索超轻轴线暗物质

Search for ultralight axion dark matter in a side-band analysis of a 199Hg free-spin precession signal

论文作者

Abel, C., Ayres, N. J., Ban, G., Bison, G., Bodek, K., Bondar, V., Chanel, E., Crawford, C. B., Daum, M., Dechenaux, B., Emmenegger, S., Flaux, P., Griffith, W. C., Harris, P. G., Kermaidic, Y., Kirch, K., Komposch, S., Koss, P. A., Krempel, J., Lauss, B., Lefort, T., Naviliat-Cuncic, O., Mohanmurthy, P., Pais, D., Piegsa, F. M., Pignol, G., Rawlik, M., Ries, D., Roccia, S., Rozpedzik, D., Schmidt-Wellenburg, P., Severijns, N., Stadnik, Y. V., Thorne, J. A., Weis, A., Wursten, E., Zejma, J., Zsigmond, G.

论文摘要

超低质量轴是一个可行的暗物质候选者，可能形成连贯的经典田地。当通过我们的银河系传播地球轨迹时，地球实验中的核旋转可能会伴随着振荡的轴轴线暗磁场。这种自旋耦合类似于振荡的伪磁场，该伪磁场调节了核自旋的自旋进动。在这里，我们报告了一个演示实验的零结果，该实验搜索了\ si {1} {\ micro \ tesla}磁场中\ si {1}中\ maghg的自旋透明信号的频率调制。我们的搜索涵盖了Axion Mass范围$ 10^{ - 16}〜\ textrm {ev} \ Lessim m_a \ Lessim 10^{ - 13}〜\ textrm {ev} $，并对轴核苷的峰值达到峰值敏感性10^{ - 6}〜\ textrm {gev}^{ - 1} $。

Ultra-low-mass axions are a viable dark matter candidate and may form a coherently oscillating classical field. Nuclear spins in experiments on Earth might couple to this oscillating axion dark-matter field, when propagating on Earth's trajectory through our Galaxy. This spin coupling resembles an oscillating pseudo-magnetic field which modulates the spin precession of nuclear spins. Here we report on the null result of a demonstration experiment searching for a frequency modulation of the free spin-precession signal of \magHg in a \SI{1}{\micro\tesla} magnetic field. Our search covers the axion mass range $10^{-16}~\textrm{eV} \lesssim m_a \lesssim 10^{-13}~\textrm{eV}$ and achieves a peak sensitivity to the axion-nucleon coupling of $g_{aNN} \approx 3.5 \times 10^{-6}~\textrm{GeV}^{-1}$.

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