Semiperturbative construction for the quark-gluon vertex

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-Abeli...

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Detalles Bibliográficos
Autores: Llanes Estrada, Felipe José, Fischer, CS, Alkofer, R
Tipo de recurso: artículo
Fecha de publicación:2006
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/50839
Acceso en línea:https://hdl.handle.net/20.500.14352/50839
Access Level:acceso abierto
Palabra clave:53
Dynamical Symmetry-Breaking
Física (Física)
22 Física
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oai_identifier_str oai:docta.ucm.es:20.500.14352/50839
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repository_id_str
spelling Semiperturbative construction for the quark-gluon vertexLlanes Estrada, Felipe JoséFischer, CSAlkofer, R53Dynamical Symmetry-BreakingFísica (Física)22 FísicaWe 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.Elsevier Science BvUniversidad Complutense de Madrid20062006-02-0120062006-02-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://hdl.handle.net/20.500.14352/50839reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/508392026-06-02T12:44:21Z
dc.title.none.fl_str_mv Semiperturbative construction for the quark-gluon vertex
title Semiperturbative construction for the quark-gluon vertex
spellingShingle Semiperturbative construction for the quark-gluon vertex
Llanes Estrada, Felipe José
53
Dynamical Symmetry-Breaking
Física (Física)
22 Física
title_short Semiperturbative construction for the quark-gluon vertex
title_full Semiperturbative construction for the quark-gluon vertex
title_fullStr Semiperturbative construction for the quark-gluon vertex
title_full_unstemmed Semiperturbative construction for the quark-gluon vertex
title_sort Semiperturbative construction for the quark-gluon vertex
dc.creator.none.fl_str_mv Llanes Estrada, Felipe José
Fischer, CS
Alkofer, R
author Llanes Estrada, Felipe José
author_facet Llanes Estrada, Felipe José
Fischer, CS
Alkofer, R
author_role author
author2 Fischer, CS
Alkofer, R
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 53
Dynamical Symmetry-Breaking
Física (Física)
22 Física
topic 53
Dynamical Symmetry-Breaking
Física (Física)
22 Física
description 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.
publishDate 2006
dc.date.none.fl_str_mv 2006
2006-02-01
2006
2006-02-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/50839
url https://hdl.handle.net/20.500.14352/50839
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Bv
publisher.none.fl_str_mv Elsevier Science Bv
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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