arXiv:0707.1401·v1·High Energy Physics — Phenomenology
Complete Two-Loop Corrections to H -> gamma gamma
Giampiero Passarino🇮🇹 · Christian Sturm🇮🇹 · Sandro Uccirati🇮🇹
Abstract
In this paper the complete two-loop corrections to the Higgs-boson decay, H -> gamma gamma, 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.
Comments: 10 pages, 8 figures