Tops from light quarks: Full mass dependence at two-loops in QCD

2008/03/31 by M. Czakon · 6 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/j.physletb.2008.05.028

published as Phys.Lett.B664:307-314,2008 · 16 pages, 5 figures, 3 tables, Mathematica files containing the small mass series expansion and numerical values at grid points as given on the plots in the paper are attached. Final version to appear in Phys. Lett. B

arxiv created 2008/05/12 · openalex publication_date 2008/05/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31

Abstract

I present the two-loop QCD corrections to the production of a massive quark–anti-quark pair in the massless quark–anti-quark annihilation channel. The result is obtained as a combination of a deep expansion in the mass around the high energy limit and of a numerical integration of a system of differential equations. The primary application of the outcome and developed methods is top quark pair production at the Large Hadron Collider.

Citations

• Heavy-quark production in massless quark scattering at two loops in QCD
• Automatized analytic continuation of Mellin–Barnes integrals

Cited by

• Double-real radiation in hadronic top quark pair production as a proof of a certain concept
• Threshold expansion of the gg(qq¯)→QQ¯+X cross section at O(αs4)
• Solving differential equations for Feynman integrals by expansions near singular points
• Two-loop fermionic corrections to heavy-quark pair production: the quark-antiquark channel
• Summary of the HERA-LHC workshop
• A systematic and efficient method to compute multi-loop master integrals

Related

• Top-quark Pair Production in a Running Mass Scheme
• Heavy-quark pair production at two loops in QCD
• Heavy-quark production in massless quark scattering at two loops in QCD
• Top-quark pair production near threshold at LHC
• QCD resummations for boosted top production