NNLO corrections to top pair production at hadron colliders: the quark-gluon reaction
Abstract
We compute the next-to-next-to-leading order QCD correction to the total inclusive top pair production cross-section in the reaction qgto toverline{t}+X . We find moderate {O} (1%) correction to central values at both Tevatron and LHC. The scale variation of the cross-section remains unchanged at the Tevatron and is significantly reduced at the LHC. We find that recently introduced approximation based on the high-energy limit of the top pair cross-section significantly deviates from the exact result. The results derived in the present work are included in version 1.4 of the program Top++. Work towards computing the reaction ggto toverline{t}+X is ongoing.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- January 2013
- DOI:
- 10.1007/JHEP01(2013)080
- arXiv:
- arXiv:1210.6832
- Bibcode:
- 2013JHEP...01..080C
- Keywords:
-
- QCD Phenomenology;
- NLO Computations;
- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment
- E-Print:
- 17+1 pages, 6 figures