0000000000925031

AUTHOR

Per Osland

0000-0002-6727-5311

showing 3 related works from this author

One-loop results for the quark-gluon vertex in arbitrary dimension

2000

Results on the one-loop quark-gluon vertex with massive quarks are reviewed, in an arbitrary covariant gauge and in arbitrary space-time dimension. We show how it is possible to get on-shell results from the general off-shell expressions. The corresponding Ward-Slavnov-Taylor identity is discussed.

QuarkVertex (graph theory)PhysicsNuclear and High Energy PhysicsLoop (graph theory)Particle physicsHigh Energy Physics::LatticeNuclear TheoryHigh Energy Physics::PhenomenologyFOS: Physical sciencesGauge (firearms)Atomic and Molecular Physics and OpticsGluonHigh Energy Physics - PhenomenologyIdentity (mathematics)High Energy Physics::TheoryHigh Energy Physics - Phenomenology (hep-ph)Dimension (vector space)Covariant transformationHigh Energy Physics::ExperimentMathematical physics
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Quark mass dependence of the one-loop three-gluon vertex in arbitrary dimension

2001

The one-loop off-shell massive quark contribution to the three-gluon vertex is calculated in an arbitrary space-time dimension. The results for all relevant on-shell and symmetric limits are obtained directly from the general off-shell results. The analytic structure of the results for the relevant massive scalar integrals is also discussed.

PhysicsQuarkNuclear and High Energy PhysicsLoop (graph theory)Particle physicsScalar (mathematics)Nuclear TheoryStructure (category theory)FOS: Physical sciencesGluonHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Dimension (vector space)Vertex (curve)Physics::Atomic and Molecular ClustersMathematical physics
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On-shell two-loop three-gluon vertex

1998

The two-loop three-gluon vertex is calculated in an arbitrary covariant gauge, in the limit when two of the gluons are on the mass shell. The corresponding two-loop results for the ghost-gluon vertex are also obtained. It is shown that the results are consistent with the Ward-Slavnov-Taylor identities.

PhysicsNuclear and High Energy PhysicsParticle physicsLoop (graph theory)High Energy Physics::LatticeNuclear TheoryHigh Energy Physics::PhenomenologyShell (structure)Vertex functionFOS: Physical sciencesGauge (firearms)GluonHigh Energy Physics::TheoryHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Vertex modelVertex (curve)Covariant transformationHigh Energy Physics::ExperimentParticle Physics - Phenomenology
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