6533b82ffe1ef96bd1294759
RESEARCH PRODUCT
Infrared facets of the three-gluon vertex
Arlene Cristina AguilarJose Rodríguez-quinteroJoannis PapavassiliouM.n. FerreiraF. De Sotosubject
High Energy Physics - TheoryNuclear and High Energy PhysicsQC1-999High Energy Physics::LatticeFOS: Physical sciencesThree-gluon vertexLattice QCD01 natural sciencesMomentumTheoretical physicsHigh Energy Physics - LatticeHigh Energy Physics - Phenomenology (hep-ph)SingularitySchwinger-Dyson equations0103 physical sciencesTensor010306 general physicsQuantum chromodynamicsPhysics010308 nuclear & particles physicsPhysicsHigh Energy Physics - Lattice (hep-lat)Lattice QCDQCDHigh Energy Physics - PhenomenologyLattice (module)High Energy Physics - Theory (hep-th)Vertex (curve)Constant (mathematics)description
We present novel lattice results for the form factors of the quenched three-gluon vertex of QCD, in two special kinematic configurations that depend on a single momentum scale. We consider three form factors, two associated with a classical tensor structure and one without tree-level counterpart, exhibiting markedly different infrared behaviors. Specifically, while the former display the typical suppression driven by a negative logarithmic singularity at the origin, the latter saturates at a small negative constant. These exceptional features are analyzed within the Schwinger-Dyson framework, with the aid of special relations obtained from the Slavnov-Taylor identities of the theory. The emerging picture of the underlying dynamics is thoroughly corroborated by the lattice results, both qualitatively as well as quantitatively.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-02-09 | Physics Letters B |