| Texto completo | |
| Autor(es): |
Lan, Jiangshan
;
Mondal, Chandan
;
Zhao, Xingbo
;
Frederico, Tobias
;
Vary, James P.
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 111, n. 11, p. 7-pg., 2025-06-16. |
| Resumo | |
We investigate gluonic contributions to the pion beyond the valence sector using basis light-front quantization (BLFQ) and the Minkowski Bethe-Salpeter equation (BSE). Starting from the valence lightfront wave function, we construct the quark-antiquark-gluon component and derive the corresponding quark and gluon parton distribution functions (PDFs). A proposed operator generating this higher Fock sector is validated against BLFQ and BSE results. We identify dynamical chiral symmetry breaking through enhanced spin-flip transitions, which amplify the low-x quark PDF and underlie the pi -rho mass splitting. The framework also reveals the impact of a vanishing gluon mass on the gluon PDF, highlighting sensitivity to nonperturbative gluon dynamics. (AU) | |
| Processo FAPESP: | 19/07767-1 - Reações nucleares com núcleos fracamente ligados ou com estrutura de cluster, radioativos e estáveis |
| Beneficiário: | Leandro Romero Gasques |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |