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arXiv · 1811.09179

Properties of the decay $H\toγγ$ using the approximate $α_s^4$-corrections and the principle of maximum conformality

Qing Yu·Xing-Gang Wu·Sheng-Quan Wang·Xu-Dong Huang·Jian-Ming Shen·Jun Zeng
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Abstract

The Higgs boson decay channel, $H\toγγ$, is one of the most important channels for probing the properties of the Higgs boson. In the paper, we reanalyze its decay width by using the QCD corrections up to $α_s^4$-order level. The principle of maximum conformality has been adopted to achieve a precise pQCD prediction without conventional renormalization scheme-and-scale ambiguities. By taking the Higgs mass as the one given by the ATLAS and CMS collaborations, i.e. $M_{H}=125.09\pm0.21\pm0.11$ GeV, we obtain $Γ(H\to γγ)|_{\rm LHC}=9.364^{+0.076}_{-0.075}$ KeV.

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Qing Yu, Xing-Gang Wu, Sheng-Quan Wang, Xu-Dong Huang, Jian-Ming Shen, Jun Zeng. 2018-11-22. Properties of the decay $H\toγγ$ using the approximate $α_s^4$-corrections and the principle of maximum conformality. https://doi.org/10.1088/1674-1137%2F43%2F9%2F093102

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