Top quark pair production at NNLO in the quark-antiquark channel

Abstract

We present the derivation of the NNLO two-parton final state contributions to top pair production in the quark-antiquark channel proportionnal to the leading colour factor $N_c^2$. Together with the three and four-parton NNLO contributions presented in a previous publication, this enables us to complete the phenomenologically most important NNLO corrections to top pair hadro-production in this channel. We derive this two-parton contribution using the massive extension of the NNLO antenna subtraction formalism and implement those corrections in a parton-level event generator providing full kinematical information on all final state particles. In addition, we also derive the heavy quark contributions proportional to $N_h$. Combining the new leading-colour and heavy quark contributions together with the light quark contributions derived previously, we present NNLO differential distributions for LHC and Tevatron. We also compute the differential top quark forward-backward asymmetry at Tevatron and find that our results are in good agreement with the measurements by the D0 collaboration.

48 pages, 9 figures

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Cited by in corpus (14)

• High-precision differential predictions for top-quark pairs at the LHC
• Top-quark pair hadroproduction at next-to-next-to-leading order in QCD
• NNLO QCD corrections to Higgs boson production at large transverse momentum
• NNLO QCD predictions for fully-differential top-quark pair production at the Tevatron
• Event Generators for High-Energy Physics Experiments
• Precise QCD predictions for the production of dijet final states in deep inelastic scattering
• NNLO QCD corrections for Drell-Yan $p_T^Z$ and ${\varphi }^{\ast }$ observables at the LHC
• Study of weak corrections to Drell-Yan, top-quark pair and dijet Production at high energies with MCFM
• Top-quark pair-production and decay at high precision
• Master integrals for the NNLO virtual corrections to $q\bar{q}\to t\bar{t}$ scattering in QCD: the non-planar graphs
• Master Integrals for the two-loop, non-planar QCD corrections to top-quark pair production in the quark-annihilation channel
• Non-local slicing approaches for NNLO QCD in MCFM
• Sector-improved residue subtraction: Improvements and Applications
• Two-loop scattering amplitude for heavy-quark pair production through light-quark annihilation in QCD