论文标题
标准模型有效理论中对Yukawa运营商的全球限制
Global Constraints on Yukawa Operators in the Standard Model Effective Theory
论文作者
论文摘要
在标准的粒子物理（SM）模型中不存在对Higgs的CP侵入性贡献，但是由Electroweak Baryogenogeny模型的动机。在这里，我们利用SM有效理论（SMEFT）的框架来与SM Yukawa耦合的参数偏差。我们介绍了相关运营商对费米管电偶极矩（EDM）的主要贡献。我们从LHC数据和电子，中子和汞EDMS上的实验界限的组合中获得了SMEFT Wilson系数的约束，并且第一次，我们对LHC和EDM数据进行了合并拟合，允许同时存在几种费米的CP侵略贡献。除其他结果外，我们还会发现，即使在多参数扫描中，EDM和LHC约束之间的非平凡相关性，例如，将CP-E-E-E-E-EDD耦合与所有第三代费米子浮动时。
CP-violating contributions to Higgs--fermion couplings are absent in the standard model of particle physics (SM), but are motivated by models of electroweak baryogenesis. Here, we employ the framework of the SM effective theory (SMEFT) to parameterise deviations from SM Yukawa couplings. We present the leading contributions of the relevant operators to the fermionic electric dipole moments (EDMs). We obtain constraints on the SMEFT Wilson coefficients from the combination of LHC data and experimental bounds on the electron, neutron, and mercury EDMs, and for the first time, we perform a combined fit to LHC and EDM data allowing the presence of CP-violating contributions from several fermion species simultaneously. Among other results, we find non-trivial correlations between EDM and LHC constraints even in the multi-parameter scans, for instance, when floating the CP-even and CP-odd couplings to all third-generation fermions.
