2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/193089In 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.10 pages, 8 figuresHigh Energy Physics - Phenomenologytext