%0 Journal Article
%A Aguilar, A.C.
%A de Soto, Feliciano
%A Ferreira, M.N.
%A Papavassiliou, J.
%A Rodríguez-Quintero, J.
%T Infrared facets of the three-gluon vertex
%D 2021
%U https://hdl.handle.net/10433/22788
%X 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.
%K QCD Three-gluon vertex Lattice QCD Schwinger-Dyson equations
%~