论文标题
为SMEFT增添风味
Adding Flavor to the SMEFT
论文作者
论文摘要
我们研究了标准模型有效田间理论（SMEFT）中的Lepton和Baryon数字的风味结构。在[1]的工作的基础上，我们定义了几个动机的风味对称性和对称性的模式，这些模式是SM以外的紫外线（UV）动力学的竞争假设，超出了TEV量表。特别是，我们考虑了夸克部门的四个不同结构，在充电的Lepton领域中考虑了七个不同的结构。 （几乎）（几乎）始终将突破风味的刺激物始终是重现观察到的充电费米亚质量和混合所需的最小刺激。对于每种情况，我们将操作员明确地构造并计入Spurion扩展中的前几个订单，从而为现象学研究和全球拟合提供现成的使用设置。我们提供了Mathematica软件包Smeftflavor，以促进此工作中未涵盖的风味对称性的类似分析。
We study the flavor structure of the lepton and baryon number--conserving dimension-6 operators in the Standard Model effective field theory (SMEFT). Building on the work of [1], we define several well-motivated flavor symmetries and symmetry-breaking patterns that serve as competing hypotheses about the ultraviolet (UV) dynamics beyond the SM, not far above the TeV scale. In particular, we consider four different structures in the quark sector and seven in the charged lepton sector. The set of flavor-breaking spurions is (almost) always taken to be the minimal one needed to reproduce the observed charged fermion masses and mixings. For each case, we explicitly construct and count the operators to the first few orders in the spurion expansion, providing ready-for-use setups for phenomenological studies and global fits. We provide a Mathematica package SMEFTflavor to facilitate similar analyses for flavor symmetries not covered in this work.
