论文标题
在Lepton Colliders区分Dirac和Majoragan重中微子
Distinguishing Dirac and Majorana Heavy Neutrinos at Lepton Colliders
论文作者
论文摘要
我们讨论了在流离失所的顶点搜索中，在未来的Lepton Colliders中观察Lepton数量违规（LNV）的潜力。尽管对于主要的生产渠道而言，由于无法观察的中微子将LEPTON数字传递出来，但仍无法搜索LNV的LNV，但可以搜索LNV的直接检测。它们包括角度分布和衰减产物的光谱以及HNL寿命。我们评论在现实中微子质量模型中观察LNV的观点，并认为Dirac vs Majorana HNL的二分法通常不足以有效地捕获其现象学，但是这些极端情况仍然代表了实验性搜索的明确定义的基准。最后，我们对Majorana和Dirac HNL的$ Z $ Pole运行期间事件和灵敏度区域的数量进行了准确的分析估计。
We discuss the potential to observe lepton number violation (LNV) in displaced vertex searches for heavy neutral leptons (HNLs) at future lepton colliders. Even though a direct detection of LNV is impossible for the dominant production channel because lepton number is carried away by an unobservable neutrino, there are several signatures of LNV that can be searched for. They include the angular distribution and spectrum of decay products as well as the HNL lifetime. We comment on the perspectives to observe LNV in realistic neutrino mass models and argue that the dichotomy of Dirac vs Majorana HNLs is in general not sufficient to effectively capture their phenomenology, but these extreme cases nevertheless represent well-defined benchmarks for experimental searches. Finally, we present accurate analytic estimates for the number of events and sensitivity regions during the $Z$-pole run for both Majorana and Dirac HNLs.
