CPP-1461 TTP / TTP 14-025 Alberta Thy 14-14 O ( α 2 s ) corrections to the running top-Yukawa coupling and the mass of the lightest Higgs boson in the MSSM
CPP-1461 TTP / TTP 14-025 Alberta Thy 14-14 O ( α 2 s ) corrections to the running top-Yukawa coupling and the mass of the lightest Higgs boson in the MSSM
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CPP-1461 TTP / TTP 14-025 Alberta Thy 14-14 O ( α 2 s ) 对正在运行的顶汤川耦合和 MSSM 中最轻希格斯玻色子的质量进行修正
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通讯作者：
N. Zerf
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作者：
D. Kunz;L. Mihaila;N. Zerf
本文提出了一种基于“运行“和“退耦“过程计算重质量谱超对称模型中运行top-Yukawa耦合的方法。为了使这种方法，我们计算的两个回路的超对称量子色动力学辐射校正所需的去耦过程。该方法的优点是可以通过重整化群方程自动计算大的对数修正。作为唯象的应用，我们研究了这种方法对超对称量子色动力学修正的影响，以三圈精度预测最轻的希格斯玻色子质量。我们观察到一个显着减少的重整化尺度的依赖相比，直接的方法，这是基于运行和极质量之间的转换关系的顶夸克。大对数贡献的重新确认的影响包括希格斯玻色子质量的预测增加，与以前的分析一致的观察。
O(α 2 s) corrections to the running top-Yukawa coupling and the mass of the lightest Higgs boson in the MSSM Abstract In this paper we propose a method to compute the running top-Yukawa coupling in supersymmetric models with heavy mass spectrum based on the " running " and " decoupling " procedure. In order to enable this approach we compute the two-loop SUSY-QCD radiative corrections required in the decoupling process. The method has the advantage that large logarithmic corrections are automatically resummed through the Renormalization Group Equations. As phenomenological application we study the effects of this approach on the SUSY-QCD corrections to the prediction of the lightest Higgs boson mass at three-loop accuracy. We observe a significant reduction of the renormalization scale dependence as compared to the direct method, that is based on the conversion relation between the running and pole mass for the top quark. The effect of resummation of large logarithmic contributions consists in an increased prediction for the Higgs boson mass, an observation in agreement with the previous analyses.