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D vertex from QCD sum rules

Author:
B. Osó  rio Rodriguesa, M.E. Braccob, M. Nielsenc,F.S. Navarrac, navarra@if.usp.br  


Journal:
Nuclear Physics A


Issue Date:
2011


Abstract(summary):

We calculate the form factors and the coupling constant in the DDρ vertex in the framework of QCD sum rules. We evaluate the three-point correlation functions of the vertex considering D, ρ and D mesons off-shell. The form factors obtained are very different but give the same coupling constant: gD=4.3±0.9 GeV−1.


Page:
127-140


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