J/psi D*D* vertex from QCD sum rules

Details J/psi D*D* vertex from QCD sum rules J/psi D*D* vertex from QCD sum rules

2004-10-05

arxiv.org/abs/hep-ph/0410071v2

Phys.Lett. B605 (2005) 326-334

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages and 4 figures, replaced version accepted for publication in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2004.11.024

We calculated the strong form factor and coupling constant for the $J/\psi
D^* D^*$ vertex in a QCD sum rule calculation. We performed a double Borel sum
rule for the three point correlation function of vertex considering both
$J/\psi$ and $D^*$ mesons off--shell. The form factors obtained are very
different, but they give the same coupling constant.

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