论文标题
在中微子地板下方探测第一代恒星
Probing below the neutrino floor with the first generation of stars
论文作者
论文摘要
我们表明，仅对宇宙中第一颗恒星（流行III恒星）的观察可以用来对暗物质与常规，重型物质之间相互作用的强度进行严格的约束。我们将此技术应用于候选的Pop III恒星综合体，该复合物在$ z \ sim 7 $的Hubble太空望远镜上发现，并找到与当前直接检测实验（例如Xenon1t）相比，诸如Xenon1t的竞争，甚至更强，例如质量（$ m_x $），大约是$ 100 $ $ $ $ GEV。我们还表明，发现足够大的流行III星可以用于绕过直接检测实验的主要局限性：它们很快敏感的中微子背景。
We show that the mere observation of the first stars (Pop III stars) in the universe can be used to place tight constraints on the strength of the interaction between dark matter and regular, baryonic matter. We apply this technique to a candidate Pop III stellar complex discovered with the Hubble Space Telescope at $z \sim 7$ and find bounds that are competitive with, or even stronger than, current direct detection experiments, such as XENON1T, for dark matter particles with mass ($m_X$) larger than about $100$ GeV. We also show that the discovery of sufficiently massive Pop III stars could be used to bypass the main limitations of direct detection experiments: the neutrino background to which they will be soon sensitive.
