%0 Journal Article
%T Infrared facets of the three-gluon vertex
%A Aguilar, A. C.
%A De Soto, F.
%A Ferreira, M. N.
%A Papavassiliou, J.
%A Rodriguez-Quintero, J.
%J Physics Letters B
%D 2021
%V 818
%I Elsevier
%@ 0370-2693
%G English
%F Aguilar_etal2021
%O WOS:000662629500036
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4865), last updated on Fri, 02 Jul 2021 15:41:55 +0000
%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
%K Three-gluon vertex
%K Lattice QCD
%K Schwinger-Dyson equations
%R 10.1016/j.physletb.2021.136352
%U https://arxiv.org/abs/2102.04959
%U https://doi.org/10.1016/j.physletb.2021.136352
%P 136352-7pp