| Full text | |
| Author(s): |
Boito, Diogo
;
Caprini, Irinel
;
Golterman, Maarten
;
Maltman, Kim
;
Peris, Santiago
Total Authors: 5
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW D; v. 97, n. 5, p. 21-pg., 2018-03-12. |
| Abstract | |
We investigate the origin of the quark-hadron duality-violating terms in the expansion of the QCD two-point vector correlation function at large energies in the complex q(2) plane. Starting from the dispersive representation for the associated polarization, the analytic continuation of the operator product expansion from the Euclidean to the Minkowski region is performed by means of a generalized Borel-Laplace transform, borrowing techniques from hyperasymptotics. We establish a connection between singularities in the Borel plane and quark-hadron duality-violating contributions. Starting with the assumption that for QCD at N-c = infinity the spectrum approaches a Regge trajectory at large energy, we obtain an expression for quark-hadron duality violations at large, but finite N-c. (AU) | |
| FAPESP's process: | 15/20689-9 - Precise determination of fundamental QCD parameters |
| Grantee: | Diogo Rodrigues Boito |
| Support Opportunities: | Research Grants - Young Investigators Grants |