标题： 用核反应堆探测地球上的暗物质 显示英文标题

标题： Probing Earth-Bound Dark Matter with Nuclear Reactors

摘要： 强相互作用暗物质可以在地球内部大量积聚，对于质量处于几个GeV范围内的暗物质粒子，它们可以在接近地表的地方大量存在。 我们研究了核反应堆中的快中子与暗物质粒子的上散射，以及随后在附近的屏蔽良好的暗物质探测器中的散射所施加于这种暗物质属性的限制，这些方案已经被用于寻找相干反应堆中微子散射的研究。 我们发现现有的实验已经覆盖了暗物质与核子自旋相关相互作用的新参数空间。 使用研究用反应堆并减少屏蔽量进行的类似实验可能会对强相互作用暗物质提供额外的灵敏度。 显示英文摘要

摘要： Strongly-interacting dark matter can be accumulated in large quantities inside the Earth, and for dark matter particles in a few GeV mass range, it can exist in large quantities near the Earth's surface. We investigate the constraints imposed on such dark matter properties by its upscattering by fast neutrons in nuclear reactors with subsequent scattering in nearby well-shielded dark matter detectors, schemes which are already used for searches of the coherent reactor neutrino scattering. We find that the existing experiments cover new parameter space on the spin-dependent interaction between dark matter and the nucleon. Similar experiments performed with research reactors, and lesser amount of shielding, may provide additional sensitivity to strongly-interacting dark matter.