Vertice J Psi Dd
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1. The coupling constants in QCD sum rules / "Constantes de acoplamento a partir das regras de soma da QCD"
We use the QCD sum rules to obtain the masses of the pentaquarks _+(1540) and _−−(1862), _+ decay width and the coupling constant and the form factor for the J/ DD* vertex.In the study of the pentaquarks, we use two kinds of interpolating fields, containing two highly correlated diquarks. We get the masses in a good agreement with the experimenta
Publicado em: 2005