论文标题
来自表面的电动尺度背景
Electrovolt-scale backgrounds from surfaces
论文作者
论文摘要
老师实验的最新结果表明，削减事件聚类可以减少其EV敏感量热计的低能量过量。这暗示了周围未录制的表面在产生背景中的作用。跨介电边界的带电颗粒众所周知会产生低能辐射。特别是，过渡辐射，次级电子发射和溅射可能有助于在EV敏感检测器中观察到的事件的光谱，形态和速率。这些表面过程的丰富现象学和高产量将使低阈值暗物质探测器的比较彼此和背景模型复杂化。
Recent results from the SENSEI experiment show that a cut on event clustering can reduce low-energy excesses in their eV-sensitive calorimeter. This hints at the role of surrounding uninstrumented surfaces in producing backgrounds. Charged particles crossing dielectric boundaries are well known to produce low-energy radiation. In particular, transition radiation, secondary electron emission, and sputtering may contribute to the spectrum, morphology, and rate of events observed in eV-sensitive detectors. The rich phenomenology and high yields of these surface processes will complicate comparisons of low-threshold dark matter detectors both to each other and to background models.
