论文标题
在地下实验中使用高Z材料搜索增强的暗物质
Search for boosted dark matter with high-Z material in underground experiments
论文作者
论文摘要
我们建议使用深层地下设施中的乳液检测器从天体物理源中寻找增强的暗物质（DM）粒子。我们进一步建议使用高$ z $材料，例如较大的DM核核相干散射横截面的铅。增强的DM将散布到激发的DM中。虽然未检测到核后坐力，但拟议的检测器可以记录激发DM的衰减产物。高能太阳中微子等背景可以通过重建的轨道拓扑控制。所提出的检测器有可能在子GEV质量区域中找到增强的DM，并且在某些参数空间中，可以进行观察，而在其他大容量检测器（例如Super-K）中没有灵敏度。
We propose to search for a boosted dark matter (DM) particle from astrophysical sources using an emulsion detector in deep underground facilities. We further propose using high-$Z$ material such as the lead for a larger DM-nucleus coherent scattering cross section above a threshold. The boosted DM will scatter into an excited DM. While the nuclear recoil energy is not detected, the decay products from the excited DM can be recorded by the proposed detector. Backgrounds such as the high energy solar neutrinos can be controlled by the reconstructed track topology. The proposed detector has the potential to find a boosted DM in the sub-GeV mass region, and in certain parameter space, an observation can be made while there is no sensitivity in other large-volume detectors such as Super-K.
