论文标题
在Faser搜索违反腐烂的Lepton风味
Search for Lepton Flavor Violating Decay at FASER
论文作者
论文摘要
FASER是一个有前途的实验之一，它在标准模型之外寻找长寿命的颗粒。在本文中，我们考虑了通过轻巧且相互作用的玻色子（CLFV）充电的Lepton风味（CLFV），并讨论FASER的可检测性。我们专注于四种类型的CLFV相互作用，即标量，伪尺度，矢量和偶极型相互作用，并计算FASER对每种CLFV相互作用的灵敏度。我们表明，通过Faser2的设置，可以探索参数空间的宽区域。特别是，发现FASER2对非常小的耦合区域具有敏感性，其中罕见的MUON衰减（例如$μ\ rightarrowEγ$）无法放置边界，并且有可能检测新光玻色子的CLFV衰减。
FASER is one of the promising experiments which search for long-lived particles beyond the Standard Model. In this paper, we consider charged lepton flavor violation (CLFV) via a light and weakly interacting boson and discuss the detectability by FASER. We focus on four types of CLFV interactions, i.e., the scalar-, pseudoscalar-, vector-, and dipole-type interaction, and calculate the sensitivity of FASER to each CLFV interaction. We show that, with the setup of FASER2, a wide region of the parameter space can be explored. Particularly, it is found that FASER2 has a sensitivity to very small coupling regions in which the rare muon decays, such as $μ\rightarrow eγ$, cannot place bounds, and that there is a possibility to detect CLFV decays of the new light bosons.
