# XIIth Quark Confinement and the Hadron Spectrum

August 28, 2016 to September 4, 2016
Europe/Athens timezone

## Strong Couplings of Three Mesons with Charm(ing) Involvement

Aug 30, 2016, 7:40 PM
2h
Terrace (Makedonia Palace)

Poster session

### Speaker

Wolfgang Lucha (Austrian Academy of Sciences)

### Description

Within a relativistic dispersion approach based on the constituent-quark model, we extract the strong couplings of three mesons among which there is, at least, one charmonium from the residues of resonance poles in adequate transition form factors for timelike momentum transfer. Confrontation of our results with corresponding earlier ones by QCD sum rules reveals significant disagreement between the outcomes of these two approaches.

### Summary

Within a relativistic dispersion approach based on the constituent-quark model, we extract the strong couplings of three mesons among which there is, at least, one charmonium from the residues of resonance poles in adequate transition form factors for timelike momentum transfer. Confrontation of our results with corresponding earlier ones by QCD sum rules reveals significant disagreement between the outcomes of these two approaches.

### Primary authors

Dmitri Melikhov (HEPHY) Hagop Sazdjian (University Paris-Sud) Silvano Simula (INFN) Wolfgang Lucha (Austrian Academy of Sciences)