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      Properties of the decay \(H\to\gamma\gamma\) using the approximate \(\alpha_s^4\)-corrections and the principle of maximum conformality

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          Abstract

          The Higgs boson decay channel, \(H\to\gamma\gamma\), 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 \(\alpha_s^4\)-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 \(\Gamma(H\to \gamma\gamma)|_{\rm LHC}=9.364^{+0.076}_{-0.075}\) KeV.

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          Author and article information

          Journal
          22 November 2018
          Article
          1811.09179

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          Custom metadata
          6 pages, 6 figures
          hep-ph

          High energy & Particle physics

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