论文标题

部分可观测时空混沌系统的无模型预测

Electroweak renormalization based on gauge-invariant vacuum expectation values of non-linear Higgs representations: 2. extended Higgs sectors

论文作者

Dittmaier, Stefan, Rzehak, Heidi

论文摘要

最近提出的针对自发损坏的规格理论(称为量规真空期望值方案(GIVS)的t骨校正)的t骨校正的方案应用于标准模型的Singlet Higgs扩展以及两-higgs doublet模型。与先前使用的the themes相反,GIVS将量规侵入性质统一具有扰动稳定性。对于标准模型,这证明了壳和MSBAR重新分配质量之间的转化,在该质量中,GIV会导致非常中等的,符号独立的电子校正。在具有扩展标量扇区的模型中,如果将Higgs混合角度与MSBAR条件重新归一化,则存在t t t的问题,这是本文的主要主题。从详细的角度来看,我们首先制定了扩展标量扇区的非线性表示,这本身就是一个有趣的主题。然后,我们制定了使用这些非线性表示的GIV在t的计算中,而GIV中的GIV中的实际高阶计算像往常一样线性表示。最后,对于被考虑的模型,我们讨论了对衰减过程的临近领先阶(Electroweak和QCD)的校正,以$ h/h \ to ww/h \ to ww/zz \ to4 \,$ fermions cp even中性higgs玻色子H和h使用MSBAR肾脏肾上腺素化的higgs Higgs与Givs混合使用Givs和之前的处理。

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) - is applied to a singlet Higgs extension of the Standard Model and to the Two-Higgs Doublet Model. In contrast to previously used tadpole schemes, the GIVS unifies the gauge-invariance property with perturbative stability. For the Standard Model this was demonstrated for the conversion between on-shell and MSbar renormalized masses, where the GIVS leads to very moderate, gauge-independent electroweak corrections. In models with extended scalar sectors, issues with tadpole renormalization exist if Higgs mixing angles are renormalized with MSbar conditions, which is the major subject of this article. In detail, we first formulate non-linear representations of the extended scalar sectors, which is an interesting subject in its own right. Then we formulate the GIVS which employs these non-linear representations in the calculation of the tadpole renormalization constants, while actual higher-order calculations in the GIVS proceed in linear representations as usual. Finally, for the considered models we discuss 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 using MSbar-renormalized Higgs mixing angles with the GIVS and previously used tadpole treatments.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源