| Full text | |
| Author(s): |
Silveira, Roberto Correa da
;
Serna, Fernando E.
;
El-Bennich, Bruno
Total Authors: 3
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW D; v. 107, n. 3, p. 11-pg., 2023-02-23. |
| Abstract | |
We calculate the strong decay couplings for rho -> pi pi, phi -KK, K*-> K pi, and D*-> D pi in a unified and consistent approach based on the impulse approximation, nonperturbative solutions of the quark-gap equation and the Poincare invariant Bethe-Salpeter amplitudes of vector and pseudoscalar mesons. In particular, we obtain the coupling gD*D pi = 17.24(-2.30)(3.06) in very good agreement with the experimental value by CLEO, which corresponds to a strong effective coupling between heavy vector and pseudoscalar mesons to the pion of (g) over cap = 0.58(-0.08) (0.10) . (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 |