Semiperturbative construction for the quark-gluon vertex
| dc.contributor.author | Llanes Estrada, Felipe José | |
| dc.contributor.author | Fischer, CS | |
| dc.contributor.author | Alkofer, R | |
| dc.date.accessioned | 2023-06-20T10:37:58Z | |
| dc.date.available | 2023-06-20T10:37:58Z | |
| dc.date.issued | 2006-02 | |
| dc.description | © 2005 Publish by Elsevier B.V. We thank M. Bhagwat, C. D. Roberts and P. Tandy for valuable discussions. The lattice data in figure 2 are a courtesy of the authors of [7]. F. L. E. thanks the hospitality of the Tiibingen Institute as well as a DAAD stipendium and Univ. Complutense travel grant. Partial support from grants FPA 2000-0956, BFM 2002-01003 (MCYT, Spain), Al 279/3-4, Fi 970/2-1, and GRK683 (DFG, Germany) | |
| dc.description.abstract | 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. | |
| dc.description.department | Depto. de Física Teórica | |
| dc.description.faculty | Fac. de Ciencias Físicas | |
| dc.description.refereed | TRUE | |
| dc.description.sponsorship | MCYT, Spain | |
| dc.description.sponsorship | DFG, Germany | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/23177 | |
| dc.identifier.doi | 10.1016/j.nuclphysbps.2005.08.008 | |
| dc.identifier.issn | 0920-5632 | |
| dc.identifier.officialurl | http://dx.doi.org/10.1016/j.nuclphysbps.2005.08.008 | |
| dc.identifier.relatedurl | http://arxiv.org/abs/hep-ph/0407332 | |
| dc.identifier.relatedurl | http://www.sciencedirect.com | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/50839 | |
| dc.journal.title | Nuclear Physics B | |
| dc.language.iso | eng | |
| dc.page.final | 46 | |
| dc.page.initial | 43 | |
| dc.publisher | Elsevier Science Bv | |
| dc.relation.projectID | FPA 2000-0956 | |
| dc.relation.projectID | BFM 2002-01003 | |
| dc.relation.projectID | Al 279/3-4 | |
| dc.relation.projectID | Fi 970/2-1 | |
| dc.relation.projectID | GRK683 | |
| dc.rights.accessRights | open access | |
| dc.subject.cdu | 53 | |
| dc.subject.keyword | Dynamical Symmetry-Breaking | |
| dc.subject.ucm | Física (Física) | |
| dc.subject.unesco | 22 Física | |
| dc.title | Semiperturbative construction for the quark-gluon vertex | |
| dc.type | journal article | |
| dc.volume.number | 152 | |
| dcterms.references | 1. R. Alkofer and L. von Smekal, Phys. Rept. 353 (2001) 281 [arXiv:hep-ph/0007355]. 2. P.O. Bowman et al., arXiv:hep-lat/0402032. 3. C. S. Fischer and R. Alkofer, Phys. Rev. D 67 (2003) 094020 [arXiv:hep-ph/0301094]. 4. C. S. Fischer, F. Llanes-Estrada and R. Alkofer, arXiv:hep-ph/0407294. 5. A. I. Davydychev, P. Osland and L. Saks, Phys. Rev. D 63 (2001) 014022 6. J. Skullerud and A. Kizilersu, JHEP 0209 (2002) 013 [arXiv:hep-ph/0205318]. 7. J.I. Skullerud, P. O. Bowman, A. Kizilersu, D. B. Leinweber and A. G. Williams, JHEP 0304 (2003) 047 [arXiv:hep-ph/0303176]. 8. M. S. Bhagwat, A. Holl, A. Krassnigg, C. D. Roberts and P. C. Tandy, arXiv:nuclth/ 0403012. 9. M. S. Bhagwat and P. C. Tandy, arXiv:hepph/ 0407163. 10. R. Alkofer, W. Detmold, C. S. Fischer and P. Maris, Phys. Rev. D 70 (2004) [arXiv:hepph/ 0309077]. 11. A. P. Szczepaniak and E. S. Swanson, Phys. Rev. D 65 (2002) 025012 [arXiv:hepph/ 0107078]; D. Zwanziger, arXiv:hepph/ 0312254; C. Feuchter and H. Reinhardt, arXiv:hep-th/0402106; id. work in preparation. 12. W. J. Marciano and H. Pagels, Phys. Rept. 36 (1978) 137; E. Eichten and F. Feinberg, Phys. Rev. D 10 (1974) 3254. | |
| dspace.entity.type | Publication | |
| relation.isAuthorOfPublication | 6290fe55-04e6-4532-91e6-1df735bdbdca | |
| relation.isAuthorOfPublication.latestForDiscovery | 6290fe55-04e6-4532-91e6-1df735bdbdca |
