2026-06-27T15:25:12Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/508392023-08-28T20:14:39Zcom_20.500.14352_14col_20.500.14352_15

Llanes Estrada, Felipe José Fischer, CS Alkofer, R 2023-06-20T10:37:58Z 2023-06-20T10:37:58Z 2006-02 0920-5632 10.1016/j.nuclphysbps.2005.08.008 https://hdl.handle.net/20.500.14352/50839 http://dx.doi.org/10.1016/j.nuclphysbps.2005.08.008 http://arxiv.org/abs/hep-ph/0407332 http://www.sciencedirect.com We construct a model for the quark-gluon vertex of Landau gauge QCD. This is of twofold interest: on the one hand the quark-gluon interaction is at the heart of quark confinement, on the other hand it is a central element in hadron phenomenology based on QCD Greens functions. We employ the non-Abelian one-loop diagram in perturbation theory, which is of order N-c. As a novelty we replace the tree-level quark and gluon propagators in this diagram by their dressed counterparts solving the Dyson-Schwinger equations. The N.-suppressed Abelian diagram is an order of magnitude smaller in various kinematics. We also study the effect of ghost dressing factors on the vertex obtaining a construction in good agreement with recent low-momentum lattice calculations. eng open access Semiperturbative construction for the quark-gluon vertex journal article