Renormalization of mixing angles
Renormalization of mixing angles
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DOI：
10.1007/jhep11(2018)104
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发表时间：
2018-08
影响因子：
5.4
通讯作者：
A. Denner;S. Dittmaier;J. Lang
中科院分区：
文献类型：
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作者：
A. Denner;S. Dittmaier;J. Lang
我们讨论了扩展标量扇区理论的混合角重整化。出于现有计划的混合角的缺点，我们审查现有的重整化计划，并介绍新的基于壳条件或对称性要求，如刚性或背景场规范不变性。特别是考虑到重正化的混合角在两希格斯双重模型和希格斯单线扩展的标准模型，我们比较这些模型中的电弱校正的重正化方案的选择。作为具体的例子，我们给出了重和轻CP偶Higgs玻色子的四费米子衰变H1/H2 → WW/ZZ→ 4f，以及电弱Higgs玻色子产生过程Higgs strahlung和矢量玻色子融合的次高阶结果.我们发现，我们的新建议的壳层和基于重正化条件是良好的行为所考虑的基准方案在这两个模型。
We discuss the renormalization of mixing angles for theories with extended scalar sectors. Motivated by shortcomings of existing schemes for mixing angles, we review existing renormalization schemes and introduce new ones based on on-shell conditions or symmetry requirements such as rigid or background-field gauge invariance. Considering in particular the renormalization of the mixing angles in the Two-Higgs-Doublet Model and the Higgs-Singlet Extension of the Standard Model, we compare electroweak corrections within these models for a selection of renormalization schemes. As specific examples, we present next-to-leading-order results on the four-fermion decays of heavy and light CP-even Higgs bosons, H 1/H 2→ WW/ZZ→ 4f, and on electroweak Higgs-boson production processes, ie Higgs-strahlung and vector-boson fusion. We find that our new proposals for on-shell and symmetry-based renormalization conditions are well-behaved for the considered benchmark scenarios in both models.