vertex from QCD sum rules
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B. OsΓ³rio Rodrigues; M.E. Bracco; M. Nielsen; F.S. Navarra
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Article
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2011
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Elsevier Science
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English
β 248 KB
We calculate the form factors and the coupling constant in the D \* DΟ vertex in the framework of QCD sum rules. We evaluate the three-point correlation functions of the vertex considering D, Ο and D \* mesons off-shell. The form factors obtained are very different but give the same coupling constan