One-loop gluon amplitude for heavy-quark production at next-to-next-to-leading order

2008/09/08 by Charalampos Anastasiou, S. Mert Aybat
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.78.114006

published as Phys.Rev.D78:114006,2008 · 27 pages, 3 figures

arxiv created 2008/09/08 · openalex publication_date 2008/12/04 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We compute the one-loop QCD amplitude for the process gg\ensuremath→QQ in dimensional regularization through order ϵ² in the dimensional regulator and for arbitrary quark mass values. This result is an ingredient of the next-to-next-to-leading order cross section for heavy-quark production at hadron colliders. The calculation is performed in conventional dimensional regularization using well-known reduction techniques as well as a method based on recent ideas for the functional form of one-loop integrands in four dimensions.

Citations

• New features of FORM
• Higgs boson production at hadron colliders in NNLO QCD
• Top quark production cross section
• One-loop self-dual and N = 4 super Yang-Mills
• Next-to-Next-to-Leading Order Higgs Production at Hadron Colliders
• One-loop tensor integrals in dimensional regularisation
• One-Loop n-Point Gauge Theory Amplitudes, Unitarity and Collinear Limits
• Updated predictions for the total production cross sections of top and of heavier quark pairs at the Tevatron and at the LHC
• Matching NLO QCD and parton showers in heavy flavour production