Complete two-loop corrections to H→γγ
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- 作者：Giampiero Passarino ; Christian Sturm ; S ; ro Uccirati
- 关键词：Feynman diagrams ; Multi-loop calculations ; Higgs physics
- 刊名：Physics Letters B
- 出版年：2007
- 出版时间：8 November 2007
- 年：2007
- 卷：655
- 期：5-6
- 页码：298-306
- 全文大小：226 K
文摘
In this Letter the complete two-loop corrections to the Higgs-boson decay, 441203547aa3"" title=""Click to view the MathML source"">H→γγ, are presented. The evaluations of both QCD and electroweak corrections are based on a numerical approach. The results cover all kinematical regions, including the WW normal-threshold, by introducing complex masses in the relevant (gauge-invariant) parts of the LO and NLO amplitudes.