Two-loop amplitudes for gluon fusion into two photons

2001/09/10 by Z. Bern, Zvi Bern, A. De Freitas +3 · 2 citations
Physics and Astronomy · #Amplitude #Gluon #Higgs boson #High-Energy Particle Collisions Research #Large Hadron Collider #Loop (graph theory) #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Scattering #Scattering amplitude #hep-ph

paper · pdf · doi:10.1088/1126-6708/2001/09/037

published as JHEP 0109:037,2001 · 24 pages, JHEP style

arxiv created 2001/09/10 · openalex publication_date 2001/09/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

We present the two-loop matrix elements for the scattering of two gluons into two photons in QCD. These matrix elements will enter into improved estimates of the QCD background to Higgs production at the LHC when the Higgs decays into two photons. The photon mode is especially important if M_H < 140 GeV. We also give the amplitudes for the crossed process, glue gamma to glue gamma.

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