Direct detection of ultralight dark matter via astronomical ephemeris
Direct detection of ultralight dark matter via astronomical ephemeris
复制标题
通过天文星历直接探测超轻暗物质
DOI：
10.1016/j.physletb.2018.12.038
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发表时间：
2019
影响因子：
4.4
通讯作者：
Yanagida Tsutomu T.
中科院分区：
文献类型：
--
作者：
Fukuda Hajime;Matsumoto Shigeki;Yanagida Tsutomu T.
提出了一种基于暗物质与核子相互作用直接探测超轻暗物质的新思想。太阳系的天体感受到暗物质风，暗物质风就像一股阻力，阻碍着它们的运动。太阳系天体的天文星历非常精确，它具有很强的探测能力，可以探测到质量远小于O（1）eV的暗物质。我们估计的阻力的基础上的弹性散射截面之间的暗物质和物体的玻恩近似的计算，并表明天文星历确实把一个非常强的约束暗物质和核子之间的相互作用，取决于如何顺利地分布的超轻暗物质在我们的太阳系中的天体比小的尺度。
A novel idea of the direct detection to search for a ultralight dark matter based on the interaction between the dark matter and a nucleon is proposed. Solar system bodies feel the dark matter wind and it acts as a resistant force opposing their motions. The astronomical ephemeris of solar system bodies is so precise that it has a strong capability to detect a dark matter whose mass is much lighter than O (1) eV. We have estimated the resistant force based on the calculation of the elastic scattering cross section between the dark matter and the bodies beyond the Born approximation, and show that the astronomical ephemeris indeed put a very strong constraint on the interaction between the dark matter and a nucleon, depending on how smoothly the ultralight dark matter is distributed at the scale smaller than the celestial bodies in our solar system.