论文标题
基于量规不变真空期望值的电动重新归一化值
Electroweak renormalization based on gauge-invariant vacuum expectation values
论文作者
论文摘要
我们简要审查了最近提出的针对自发损坏的规格理论的t骨校正的方案，称为量规真空预期价值方案（GIVS）。如果不是所有的自由参数，则t方案在可观察物的高阶预测中至关重要。与先前使用的the themes相反，GIV统一了规格不变性和扰动稳定性的特性。例如，将GIV应用于标准模型，在壳上固定质量向MSBAR氮质量质量的转化时会导致非常中等的电动校正。此外，在具有扩展的希格斯扇区的模型中，与传统的无独立tadpole治疗的Higgs混合角度的MSBAR重生相比，GIV不容易发生扰动不稳定性。我们通过考虑将衰减过程的近距离级（electroweak和QCD）进行校正来说明这一点，以$ h/h \ to ww/zz \ to4 $ to4 $ fermions在标准型号的单身型中，在标准模型和两型型型模型中进行了单点higgs higgs higgs higgs higgs higgs h和h。
We briefly review a recently proposed scheme for a gauge-invariant treatment of tadpole corrections in spontaneously broken gauge theories called Gauge-Invariant Vacuum expectation value Scheme (GIVS). The tadpole scheme matters in higher-order predictions of observables if not all free parameters are fixed by renormalization conditions based on S-matrix elements, such as in MSbar renormalization. In contrast to previously used tadpole schemes, the GIVS unifies the properties of gauge invariance and perturbative stability. The application of the GIVS to the Standard Model, for instance, leads to very moderate electroweak corrections in the conversion of on-shell-renormalized to MSbar-renormalized masses. Moreover, in models with extended Higgs sectors, the GIVS is less prone to perturbative instabilities in the MSbar renormalization of Higgs mixing angles than observed for the traditional gauge-independent tadpole treatment. We illustrate this by considering the next-to-leading-order (electroweak and QCD) corrections to the decay processes $h/H\to WW/ZZ\to4$fermions of the CP-even neutral Higgs bosons h and H in a singlet Higgs extension of the Standard Model and in the Two-Higgs-Doublet Model.
