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Contribution of disconnected diagrams to the hyperfine splitting of charmonium
We discuss the contribution of OZI-suppressed diagrams to the hyperfine splitting of charmonium in lattice QCD. We study valence quark mass regions from strange to charm quark masses. No contribution of the disconnected diagram is seen in the vector meson channel. In the pseudo-scalar channel and fo...
| Autores principales: | , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2004
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1088/1126-6708/2004/08/004 http://cds.cern.ch/record/732121 |