论文标题
LBECA：低背景电子计数，用于sub-GEV暗物质检测
LBECA: A Low Background Electron Counting Apparatus for Sub-GeV Dark Matter Detection
论文作者
论文摘要
两相高贵的液体探测器，具有较大的目标质量和有效的背景降低，目前正领导着在几个GEV上方的WIMP块的暗物质直接检测。由于它们对单个电离电子信号的敏感性，这些检测器也证明了通过电子散射对sub-GEV暗物质的限制也很强。实际上，Sub-GEV暗物质的最严格的直接检测约束至〜5 MEV来自高贵的液体探测器，即Xenon10，Darkside-50，Xenon100和Xenon1t，尽管这些实验仍然遭受单个或几个电子水平的高背景。 LBECA是一种计划的100公斤量表液体氙气检测器，单个和一些电子背景显着降低。与当前的最佳约束相比，该实验将提高三个数量级的敏感性。
Two-phase noble liquid detectors, with large target masses and effective background reduction, are currently leading the dark matter direct detection for WIMP masses above a few GeV. Due to their sensitivity to single ionized electron signals, these detectors were shown to also have strong constraints for sub-GeV dark matter via their scattering on electrons. In fact, the most stringent direct detection constraints for sub-GeV dark matter down to as low as ~5 MeV come from noble liquid detectors, namely XENON10, DarkSide-50, XENON100 and XENON1T, although these experiments still suffer from high background at single or a few electron level. LBECA is a planned 100-kg scale liquid xenon detector with significant reduction of the single and a few electron background. The experiment will improve the sensitivity to sub-GeV dark matter by three orders of magnitude compared to the current best constraints.
