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Complete three-loop QCD corrections to the decay H -> γγ

We present the result for the three-loop singlet QCD corrections to the decay of a Higgs boson into two photons and improve the calculation for the non-singlet case. With the new result presented, the decay width Gamma(H -> γγ) is completely known at O(G_F α^2 α_s^2, G_F α^3).

preprint2012arXivOpen access

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