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arXiv 0902.1442hep-ph
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在NNLO及以后希格斯玻色子衰变为底夸克的QCD预言的解释

Uncertainties of QCD predictions for Higgs boson decay into bottom quarks at NNLO and beyond

A. L. Kataev, V. T. Kim

摘要:

强调了在$\rm{M_H\leq 2M_W}$情况下,详细研究标准模型希格斯玻色子衰变为底夸克的理论QCD预言的重要性。考虑了高阶微扰QCD修正到$α_s^4$ -项的影响。$π^2$项的解析延拓,典型的闵可夫斯基量,进行了$Γ(H\to\bar{b}b)$衰减宽度。分析了这种衰变宽度计算中的不确定性。

英文摘要:

An importance of the detailed studies of the theoretical QCD predictions for the decay width of Standard Model Higgs boson into bottom quarks, in the case when $\rm{M_H\leq 2M_W}$, is emphasized. The effects of higher order perturbative QCD corrections up to order $α_s^4$-terms are considered. The resummations of the $π^2$ terms resulting from analytical continuation, typical of Minkowskian quantities, is undertaken for the $Γ(H\to\bar{b}b)$ decay width. The uncertainties in the calculation of this decay width are analyzed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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