@Article{Aguilar_etal2024,
author="Aguilar, A. C.
and De Soto, F.
and Ferreira, M. N.
and Papavassiliou, J.
and Pinto-Gomez, F.
and Rodr{\'i}guez-Quintero, J.
and Santos, L. R.",
title="Nonperturbative four-gluon vertex in soft kinematics",
journal="Physics Letters B",
year="2024",
publisher="Elsevier",
volume="858",
pages="139065--7pp",
optkeywords="Quantum chromodynamics; Four-gluon vertex; Lattice QCD; Schwinger-Dyson equations",
abstract="We present a nonperturbative study of the form factor associated with the projection of the full four-gluon vertex on its classical tensor, for a set of kinematics with one vanishing and three arbitrary external momenta. The treatment is based on the Schwinger-Dyson equation governing this vertex, and a large-volume lattice simulation, involving ten thousand gauge field configurations. The key hypothesis employed in both approaches is the {\textquoteleft}{\textquoteleft}planar degeneracy{\textquoteright}{\textquoteright}, which classifies diverse configurations by means of a single variable, thus enabling their meaningful {\textquoteleft}{\textquoteleft}averaging{\textquoteright}{\textquoteright}. The results of both approaches show notable agreement, revealing a considerable suppression of the averaged form factor in the infrared. The deviations from the exact planar degeneracy are discussed in detail, and a supplementary variable is used to achieve a more accurate description. The effective charge defined through this special form factor is computed within both approaches, and the results obtained are in excellent agreement.",
optnote="WOS:001336250000001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=6299), last updated on Mon, 28 Oct 2024 10:34:57 +0000",
issn="0370-2693",
doi="10.1016/j.physletb.2024.139065",
opturl="https://arxiv.org/abs/2408.06135",
opturl="https://doi.org/10.1016/j.physletb.2024.139065",
language="English"
}