We study the sensitivity of displaced vertex searches for heavy neutrinos produced in W boson decays in the LHC detectors ATLAS, CMS and LHCb. We also propose a new search that uses the muon chambers to detect muons from heavy neutrino decays outside the tracker. The sensitivity estimates are based on benchmark models in which the heavy neutrinos mix exclusively with one of the three Standard Model generations. In the most sensitive mass regime the displaced vertex searches can improve existing constraints on the mixing with the first two SM generations by more than four orders of magnitude and by three orders of magnitude for the mixing with the third generation.

中文翻译：

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LHC 和 HL-LHC 位移顶点搜索中的重中微子

我们研究了 LHC 探测器 ATLAS、CMS 和 LHCb 中 W 玻色子衰变中产生的重中微子的位移顶点搜索的灵敏度。我们还提出了一种新的搜索方法，它使用 μ 子室来检测来自跟踪器外重中微子衰变的 μ 子。敏感性估计基于基准模型，其中重中微子仅与三个标准模型代之一混合。在最敏感的质量体系中，位移顶点搜索可以将与前两代 SM 混合的现有约束提高四个数量级以上，并将与第三代混合的现有限制提高三个数量级。