Gauge-independent MS¯$$ \overline{\mathrm{MS}} $$ renormalization in the 2HDM
Gauge-independent MS¯$$ \overline{\mathrm{MS}} $$ renormalization in the 2HDM
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DOI：
10.1007/jhep09(2016)115
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发表时间：
2016-07
影响因子：
5.4
通讯作者：
A. Denner;L. Jenniches;J. Lang;C. Sturm
中科院分区：
文献类型：
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作者：
A. Denner;L. Jenniches;J. Lang;C. Sturm
基于混合角的重整化和希格斯玻色子区的软Z 2对称破缺尺度M sb，我们提出了CP守恒的双希格斯双重模型的一致重整化方案。该方案要求在计算的所有步骤中完全一致地处理蝌蚪，以提供与规范无关的S矩阵元素。我们展示了如何裸物理参数必须被定义和验证规范的物理量的独立性，通过明确的计算在一个一般的R-规范。该程序是简单的，适用于其他模型与扩展希格斯部门。与所提出的方案相比，混合角的重正化与流行的壳层重正化方案相结合，在单圈水平上产生了规范依赖的结果。我们提出了明确的结果，电弱非线性校正选定的过程中适当的重正化双希格斯模型，特别是讨论其规模的依赖性。
We present a consistent renormalization scheme for the CP-conserving Two-Higgs-Doublet Model based onrenormalization of the mixing angles and the soft-Z 2-symmetry-breaking scale M sb in the Higgs sector. This scheme requires to treat tadpoles fully consistently in all steps of the calculation in order to provide gauge-independent S-matrix elements. We show how bare physical parameters have to be defined and verify the gauge independence of physical quantities by explicit calculations in a general R ξ-gauge. The procedure is straightforward and applicable to other models with extended Higgs sectors. In contrast to the proposed scheme, therenormalization of the mixing angles combined with popular on-shell renormalization schemes gives rise to gauge-dependent results already at the one-loop level. We present explicit results for electroweak NLO corrections to selected processes in the appropriately renormalized Two-Higgs-Doublet Model and in particular discuss their scale dependence.