| Full text | |
| Author(s): |
El-Bennich, Bruno
;
Ramos-Zambrano, German
;
Rojas, Eduardo
Total Authors: 3
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW D; v. 103, n. 7, p. 11-pg., 2021-04-12. |
| Abstract | |
Based on the generalized quantum electrodynamics expression for the Podolsky propagator, which preserves gauge invariance for massive photons, we propose a model for the massive gluon propagator that reproduces well-known features of established strong-interaction models in the framework of the Dyson-Schwinger equation. By adjusting the Podolsky mass and the coupling strength we thus construct a model with simple analytical properties known from perturbative theory, yet well suited to describe a confining interaction. We obtain solutions of the Dyson-Schwinger equation for the quark at spacelike momenta on the real axis as well as on the complex plane and solving the bound-state problem with the Bethe-Salpeter equation yields masses and weak decay constants of the pi, K and eta(c) in excellent agreement with experimental values, while the D and D-s are reasonably well described. The analytical simplicity of this effective interaction has the potential to be useful for phenomenological applications and may facilitate calculations in Minkowski space. (AU) | |
| FAPESP's process: | 18/20218-4 - Quantum Chromodynamics for practitioners: understanding current experiments at Jefferson Lab and preparing the future at the Electron-Ion Collider and the Facility for Antiproton and Ion Research |
| Grantee: | Bruno Omar El Bennich |
| Support Opportunities: | Regular Research Grants |