| Texto completo | |
| Autor(es): |
Pinto-Gomez, F.
;
De Soto, F.
;
Ferreira, M. N.
;
Papavassiliou, J.
;
Rodriguez-Quintero, J.
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Physics Letters B; v. 838, p. 8-pg., 2023-02-08. |
| Resumo | |
We present novel results for the three-gluon vertex, obtained from an extensive quenched lattice simulation in the Landau gauge. The simulation evaluates the transversely projected vertex, spanned on a special tensorial basis, whose form factors are naturally parametrized in terms of individually Bosesymmetric variables. Quite interestingly, when evaluated in these kinematics, the corresponding form factors depend almost exclusively on a single kinematic variable, formed by the sum of the squares of the three incoming four-momenta, q, r, and p. Thus, all configurations lying on a given plane in the coordinate system (q2, r2, p2) share, to a high degree of accuracy, the same form factors, a property that we denominate planar degeneracy. We have confirmed the validity of this property through an exhaustive study of the set of configurations satisfying the condition q2 = r2, within the range [0, 5 GeV]. This drastic simplification allows for a remarkably compact description of the main bulk of the data, which is particularly suitable for future numerical applications. A semi-perturbative analysis reproduces the lattice findings rather accurately, once the inclusion of a gluon mass has cured all spurious divergences. (c) 2023 Published by Elsevier B.V. This is an open access article under the CC BY license (http:// creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3. (AU) | |
| Processo FAPESP: | 20/12795-1 - Evolução do tensor energia momento durante a fase de pré-equilíbrio de uma colisão de íons pesados |
| Beneficiário: | Antonio Maurício Soares Narciso Ferreira |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 17/05685-2 - Física hadrônica em colisões nucleares de altas energias |
| Beneficiário: | Jun Takahashi |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |