Two-loop corrections to $gg \to γγ$
arXiv:hep-ph/0211344 · doi:10.1016/S0920-5632(03)80164-0
Abstract
An overview of the calculation of the two-loop helicity amplitudes for scattering of two gluons into two photons is presented. These matrix elements enter into the recent improved calculation of the QCD background to Higgs boson decay into a pair of photons, which is the preferred search mode at the LHC for the case of a light Higgs boson.
Presented at RADCOR 2002/Loops and Legs in Quantum Field Theory (September 2002, Kloster Banz, Germany)