Complete Two-Loop Corrections to H -> gamma gamma
arXiv:0707.1401 · doi:10.1016/j.physletb.2007.09.002
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.
10 pages, 8 figures