论文标题
直接检测中的加速轻暗物质地球非弹性散射
Accelerated Light Dark Matter-Earth Inelastic Scattering in Direct Detection
论文作者
论文摘要
地球效应在直接检测亚GEV暗物质中起着至关重要的作用。除了弹性散射过程外，暗物质和原子核之间通常被忽略的准弹性和深度非弹性散射可以主导相互作用，尤其是在加速的暗物质情景中，这可能会影响地下实验的暗物质敏感性。我们计算了这种非弹性散射的贡献，这些散射贡献用大气暗物质说明了我们论点的本质。有了可用的数据，我们发现大气暗物质核散射的最终上限与仅考虑弹性散射过程的横截面可能会有所不同。
The Earth-stopping effect plays a crucial role in the direct detection of sub-GeV dark matter. Besides the elastic scattering process, the quasi-elastic and deep inelastic scatterings between dark matter and nucleus that are usually neglected can dominate the interaction, especially in the accelerated dark matter scenarios, which may affect the dark matter detection sensitivity significantly for the underground experiments. We calculate such inelastic scattering contributions in the Earth-stopping effect and illustrate the essence of our argument with the atmospheric dark matter. With the available data, we find that the resulting upper limits on the atmospheric dark matter-nucleus scattering cross-section can differ from those only considering the elastic scattering process by one order of magnitude.
