Threshold expansion of the gg(qq¯)→QQ¯+X cross section at O(αs4)

2009/11/30 by Martin Beneke, M. Beneke, M. Czakon +5 · 4 citations
Mathematics · Physics and Astronomy · #Algorithm #Computer science #Database #Geometry #Gluon #High-Energy Particle Collisions Research #Mathematics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Philosophy #Physics #Quantum Chromodynamics and Particle Interactions #Quark #Scroll #Singularity #Theology #hep-ph

paper · pdf · doi:10.1016/j.physletb.2010.05.038

published as Phys.Lett.B690:483-490,2010 · 11 pages, 2 figures, published erratum included at the end of the paper, updated attached Mathematica file

openalex publication_date 2010/05/22 · openalex created_date 2016/06/24 · arxiv created 2018/03/12 · arxiv updated 2018/03/13 · openalex updated_date 2026/08/05

Abstract

We derive the complete set of velocity-enhanced terms in the expansion of the total cross section for heavy-quark pair production in hadronic collisions at next-to-next-to-leading order. Our expression takes into account the effects of soft-gluon emission as well as that of potential-gluon exchanges. We prove that there are no enhancements due to subleading soft-gluon couplings multiplying the leading Coulomb singularity.

Citations

• One-loop gluon amplitude for heavy-quark production at next-to-next-to-leading order
• Two-Loop Soft Anomalous Dimensions and Next-to-Next-to-Leading-Logarithm Resummation for Heavy Quark Production
• Higgs boson production at hadron colliders in NNLO QCD
• Heavy-quark production in massless quark scattering at two loops in QCD
• Two-loop fermionic corrections to heavy-quark pair production: the quark-antiquark channel
• Sudakov resummation and finite order expansions of heavy quark hadroproduction cross sections
• Asymptotic expansion of Feynman integrals near threshold
• Tops from light quarks: Full mass dependence at two-loops in QCD

Cited by

• Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √(s)=7 TeV
• Bound-state effects on kinematical distributions of top quarks at hadron colliders
• Recent theoretical progress in top quark pair production at hadron colliders
• HATHOR – HAdronic Top and Heavy quarks crOss section calculatoR