论文标题
Scotogenic模型与标准模型有效场理论的一环匹配到维度7
One-loop Matching of Scotogenic Model onto Standard Model Effective Field Theory up to Dimension 7
论文作者
论文摘要
Scotogenic中微子Seesaw模型是标准模型的最小扩展，该模型具有三个$ \ Mathbb {Z} _2 $ -ODD右手单式手提费$ n $和一个$ \ Mathbb {z} _2 $ -ODD Higgs Doublet $η$可以容纳Tiny中心群体，并提供一个tiny中的候选图片，并提供了一个深色的标准。由于缺乏电动量表的实验性签名新物理学，因此可以假设这些新粒子远高于电动量表，并采用有效的现场理论方法来研究其对低能可观察物的影响。在这项工作中，我们将最近开发的功能匹配形式主义应用于模型的单循环匹配到标准模型有效场理论，直到所有新状态$ n $ and $ n $ and $η$都很重，直至dimension第七。这是一个现实的示例，由于$ \ mathbb {z} _2 $对称性，没有树级匹配。使用匹配结果，我们分析了它们对几种物理过程的现象学意义，包括违反Lepton数字效应，CDF $ W $ MOSS多余的多余以及违反Lepton风味的衰减，例如$μ\ toeγ$和$μ\至3e $。
The scotogenic neutrino seesaw model is a minimal extension of the standard model with three $\mathbb{Z}_2$-odd right-handed singlet fermions $N$ and one $\mathbb{Z}_2$-odd Higgs doublet $η$ that can accommodate the tiny neutrino mass and provide a dark matter candidate in a unified picture. Due to lack of experimental signatures for electroweak scale new physics, it is appealing to assume these new particles are well above the electroweak scale and take the effective field theory approach to study their effects on low energy observables. In this work we apply the recently developed functional matching formalism to the one-loop matching of the model onto the standard model effective field theory up to dimension seven for the case when all new states $N$ and $η$ are heavy to be integrated out. This is a realistic example which has no tree-level matching due to the $\mathbb{Z}_2$ symmetry. Using the matching results, we analyze their phenomenological implications for several physical processes, including the lepton number violating effect, the CDF $W$ mass excess, and the lepton flavor violating decays like $μ\to eγ$ and $μ\to 3e$.
