# NNLO QCD subtraction for top-antitop production in the qq¯$$ q\overline{q} $$ channel

@article{Abelof2014NNLOQS, title={NNLO QCD subtraction for top-antitop production in the qq¯\$\$ q\overline\{q\} \$\$ channel}, author={Gabriel Abelof and A. Gehrmann-De Ridder and Philipp Maierh{\"o}fer and S. Pozzorini}, journal={Journal of High Energy Physics}, year={2014}, volume={2014}, pages={1-55} }

A bstractWe present the computation of the double real and real-virtual contributions to top-antitop pair production in the quark-antiquark channel at leading colour. The qq¯$$ q\overline{q} $$ → tt¯g$$ t\overline{t} g $$ amplitudes contributing to the real-virtual part are computed with OpenLoops, and their numerical stability in the soft and collinear regions is found to be sufficiently high to perform a realistic NNLO calculation in double precision. The subtraction terms required at real…

## 23 Citations

Light fermionic NNLO QCD corrections to top-antitop production in the quark-antiquark channel

- Physics
- 2014

A bstractWe present the NNLO corrections to top pair production in the quark-antiquark channel proportional to the number of light quark flavors Nl. While the double real corrections were derived…

Master integrals for the NNLO virtual corrections to $q \bar{q} \rightarrow t \bar{t}$ scattering in QCD: the non-planar graphs

- Mathematics
- 2019

We complete the analytic evaluation of the master integrals for the two-loop non-planar box diagrams contributing to the top-pair production in the quark-initiated channel, at next-to-next-to-leading…

Top-quark pair production at the LHC: fully differential QCD predictions at NNLO

- PhysicsJournal of High Energy Physics
- 2019

Abstract
We report on a new fully differential calculation of the next-to-next-to-leading-order (NNLO) QCD radiative corrections to the production of top-quark pairs at hadron colliders. The…

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

- Physics
- 2015

A bstractWe 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 Nc2. Together with…

NLO electroweak automation and precise predictions for W + multijet production at the LHC

- Physics
- 2014

A bstractWe present a fully automated implementation of next-to-leading order electroweak (NLO EW) corrections in the OpenLoops matrix-element generator combined with the Sherpa and Munich Monte…

Renormalization-group improved fully differential cross sections for top pair production

- Physics
- 2014

A bstractWe extend approximate next-to-next-to-leading order results for top-pair production to include the semi-leptonic decays of top quarks in the narrow-width approximation. The new…

Higgs boson decay into b-quarks at NNLO accuracy

- Physics
- 2015

A bstractWe compute the fully differential decay rate of the Standard Model Higgs boson into b-quarks at next-to-next-to-leading order (NNLO) accuracy in αs. We employ a general subtraction scheme…

Top-pair production and decay at NLO matched with parton showers

- Physics
- 2014

A bstractWe present a next-to-leading order (NLO) calculation of tt¯$$ t\overline{t} $$ production in hadronic collisions interfaced to shower generators according to the POWHEG method. We start from…

A Four-Point Function for the Planar QCD Massive Corrections to Top-Antitop Production in the Gluon-Fusion Channel

- Mathematics, PhysicsTexts & Monographs in Symbolic Computation
- 2019

In these proceedings we present the study of a four-point function that is involved in the evaluation of the Master Integrals necessary to compute the two-loop massive QCD planar corrections to…

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