论文标题
在$ \ sqrt {s} = $ 13 tev中搜索顶级夸克生产中的带电 - 莱普顿风味
Search for charged-lepton flavor violation in top quark production and decay in pp collisions at $\sqrt{s} =$ 13 TeV
论文作者
论文摘要
从搜索违反勒普顿风味的（CLFV）相互作用的Quark生产和PP碰撞中的衰减中，在13 TEV的质量碰撞中腐烂得出了结果。这些事件必须在最终状态中包含一对相对充满电的电子龙对，以及至少一对源自底部夸克的喷气机。数据对应于CMS实验在LHC上收集的138 fb $^{ - 1} $的集成光度。该分析包括通过CLFV互动的最高夸克模式的生产（q $ \ to $ e $ $ t）和衰减（t $ \ to $ e $ $ q）模式，Q指u或c Quark。这些相互作用使用有效的现场理论方法进行了参数化。由于对标准模型的预期没有显着过多，因此根据向量，标量和类似张量的clfv四效相互作用来解释结果。最后，观察到的排除限制设置为95％的置信度，在顶部夸克的各个分支分支为e $ $ $ $ $和（魅力）0.13 $ \ times $ 10 $^{ - 6} $（1.31 $ \ times $ 10 $ $ 10 $^^{ - 6} $ $ 10 $ $ $ $ \ $ \ \ $ \ \ \ \ \ \ \ \ \ \ 60 $ 10 $^$^$^$^$^$^^$^^$^^$^^$^^$^^$^^$^^$^^$（ 10 $^{ - 6} $）和0.25 $ \ times $ 10 $^{ - 6} $（2.59 $ \ times $ 10 $^{ - 6} $）分别用于矢量，标量和张量CLFV交互。
Results are presented from a search for charged-lepton flavor violating (CLFV) interactions in top quark production and decay in pp collisions at a center-of-mass energy of 13 TeV. The events are required to contain one oppositely charged electron-muon pair in the final state, along with at least one jet identified as originating from a bottom quark. The data correspond to an integrated luminosity of 138 fb$^{-1}$, collected by the CMS experiment at the LHC. This analysis includes both the production (q $\to$ e$μ$t) and decay (t $\to$ e$μ$q) modes of the top quark through CLFV interactions, with q referring to a u or c quark. These interactions are parametrized using an effective field theory approach. With no significant excess over the standard model expectation, the results are interpreted in terms of vector-, scalar-, and tensor-like CLFV four-fermion effective interactions. Finally, observed exclusion limits are set at 95% confidence levels on the respective branching fractions of a top quark to an e$μ$ pair and an up (charm) quark of 0.13 $\times$ 10$^{-6}$ (1.31 $\times$ 10$^{-6}$), 0.07 $\times$ 10$^{-6}$ (0.89 $\times$ 10$^{-6}$), and 0.25 $\times$ 10$^{-6}$ (2.59 $\times$ 10$^{-6}$) for vector, scalar, and tensor CLFV interactions, respectively.
