Assuming that dark matter (DM) efficiently clusters on various scales we analyse the possible impact on direct DM searches. For certain sizes and densities of DM clusters, mutual detector-cluster encounters may occur only once a year or every several years leading to the apparent failure of individual experiments searching for DM to discover it. If, however, encounters with Earth size and up to 10 4 times bigger clusters occur about once a year, then finding time correlations between events in different underground detectors can lead to DM discovery.

中文翻译：

---

直接探测实验中的暗物质簇和时间相关性

假设暗物质 (DM) 在各种尺度上有效地聚集，我们分析了对直接 DM 搜索的可能影响。对于某些大小和密度的 DM 星团，探测器与星团的相互相遇可能每年或每几年只发生一次，导致寻找 DM 的单个实验明显失败以发现它。然而，如果大约每年发生一次与地球大小和多达 10 4 倍大的星团相遇，那么在不同地下探测器中找到事件之间的时间相关性可以导致 DM 发现。