6533b860fe1ef96bd12c2e6f
RESEARCH PRODUCT
One-loop amplitudes for four-point functions with two external massive quarks and two external massless partons up toO(ε2)
Z. MerebashviliM. RogalJ. G. Körnersubject
PhysicsQuantum chromodynamicsQuarkNuclear and High Energy PhysicsParticle physicsNuclear TheoryHigh Energy Physics::PhenomenologyOrder (ring theory)PartonMassless particleRenormalizationDimensional regularizationHigh Energy Physics::ExperimentPerturbation theory (quantum mechanics)Nuclear Experimentdescription
We present complete analytical O({epsilon}{sup 2}) results on the one-loop amplitudes relevant for the next-to-next-to-leading order (NNLO) quark-parton model description of the hadroproduction of heavy quarks as given by the so-called loop-by-loop contributions. All results of the perturbative calculation are given in the dimensional regularization scheme. These one-loop amplitudes can also be used as input in the determination of the corresponding NNLO cross sections for heavy flavor photoproduction, and in photon-photon reactions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-02-27 | Physical Review D |