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arXiv 1507.05093hep-phhep-ex
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公共NMSSM谱发生器的Higgs质量预测

Higgs mass predictions of public NMSSM spectrum generators

Florian Staub, Peter Athron, Ulrich Ellwanger, Ramona Grober, Margarete Muhlleitner, Pietro Slavich, Alexander Voigt

摘要:

公开可用的NMSSM的频谱发生器经常导致不同的预测的质量的标准模型-类希格斯玻色子,即使使用相同的重整化方案和两个循环的精度。根据参数点的不同,差异可以超过5 GeV,甚至达到8 GeV的中等超粒子质量高达2 TeV。它示出在这里,这些差异可以追溯到运行的标准模型参数进入所有计算的计算,在两个回路校正中使用的近似包括在不同的代码,并为重整化条件和尺度的不同选择。特别指出了顶部汤川耦合计算的重要性。

英文摘要:

The publicly available spectrum generators for the NMSSM often lead to different predictions for the mass of the standard model-like Higgs boson even if using the same renormalization scheme and two-loop accuracy. Depending on the parameter point, the differences can exceed 5 GeV, and even reach 8 GeV for moderate superparticle masses of up to 2 TeV. It is shown here that these differences can be traced back to the calculation of the running standard model parameters entering all calculations, to the approximations used in the two-loop corrections included in the different codes, and to different choices for the renormalization conditions and scales. In particular, the importance of the calculation of the top Yukawa coupling is pointed out.

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