论文标题
中子瓶异常的复合解决方案
A Composite Solution to the Neutron Bottle Anomaly
论文作者
论文摘要
与中子束实验中测得的寿命相比，被困在瓶中的中子的寿命的测量始终短。由于捕获电位低至50 nev，而仅位于瓶顶部的中子探测器，这种差异可能是暗物质与中子柔软散射的结果。但是，在暗物质散射的常规模型中获得观察到的损失率是一项挑战。我们表明，这种现象学在暗物质的复合模型中是可能的，其中软散射来自已捕获并积累在地球中的暗物质。可以通过在陷阱周围放置更多的中子探测器来测试该解决方案，从而提供更好的角度覆盖范围。被困的复合暗物质的软散射现象学是通用的，并提出了可以追求的新实验方向来检测这一大型模型。
Measurements of the lifetime of neutrons trapped in a bottle have been consistently shorter than the lifetime measured in neutron beam experiments. With trapping potentials as low as 50 neV and neutron detectors located only at the top of the bottle, this discrepancy could be the result of the soft scattering of dark matter with neutrons. However, it is challenging to obtain the observed loss rate in conventional models of dark matter scattering. We show that this phenomenology is possible in composite models of dark matter where the soft scattering is from dark matter that has been captured and accumulated in the earth. This solution can be tested by placing more neutron detectors around the trap, providing better angular coverage. The phenomenology of soft scattering by trapped composite dark matter is generic and suggests new experimental directions that could be pursued to detect this large class of models.
