6533b7d5fe1ef96bd12653c5
RESEARCH PRODUCT
Top-quark pair production at next-to-next-to-leading order QCD in electron positron collisions
Werner BernreutherOliver DekkersDennis HeislerLong ChenZong-guo Sisubject
Particle physicsTop quarkNuclear and High Energy Physicsmedia_common.quotation_subjectComputationHigh Energy Physics::LatticeFOS: Physical sciencesElectronpair production [top]53001 natural sciencesAsymmetryHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)PositronHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesquantum chromodynamicsddc:530010306 general physicsmedia_commonQuantum chromodynamicsPhysicselectron positronpair [quark antiquark]010308 nuclear & particles physicsHigh Energy Physics::Phenomenologytop: productionObservablequark antiquark: pairHigh Energy Physics - PhenomenologyPair productionproduction [top]High Energy Physics::Experimentantiquarktop: pair productionasymmetrydescription
We set up a formalism, within the antenna subtraction framework, for computing the production of a massive quark-antiquark pair in electron positron collisions at next-to-next-to-leading order in the coupling $\alpha_s$ of quantum chromodynamics at the differential level. Our formalism applies to the calculation of any infrared-safe observable. We apply this set-up to the production of top-quark top antiquark pairs in the continuum. We compute the production cross section and several distributions. We determine, in particular, the top-quark forward-backward asymmetry at order $\alpha_s^2$. Our result agrees with previous computations of this observable.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-12-19 |