TY  - JOUR
AU  - Aguilar, A. C.
AU  - De Soto, F.
AU  - Ferreira, M. N.
AU  - Papavassiliou, J.
AU  - Rodriguez-Quintero, J.
PY  - 2021
DA  - 2021//
TI  - Infrared facets of the three-gluon vertex
T2  - Phys. Lett. B
JO  - Physics Letters B
SP  - 136352
EP  - 7pp
VL  - 818
PB  - Elsevier
KW  - QCD
KW  - Three-gluon vertex
KW  - Lattice QCD
KW  - Schwinger-Dyson equations
AB  - 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.
SN  - 0370-2693
UR  - https://arxiv.org/abs/2102.04959
UR  - https://doi.org/10.1016/j.physletb.2021.136352
DO  - 10.1016/j.physletb.2021.136352
LA  - English
N1  - WOS:000662629500036
ID  - Aguilar_etal2021
ER  -