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

M. E. Bracco; M. Chiapparini; M. Nielsen; F. S. Navarra

doi:10.1016/j.physletb.2004.11.024

J/psi DD vertex from QCD sum rules

高能物理 - 唯象学 2009-11-10 v2

作者: M. E. Bracco , M. Chiapparini , M. Nielsen , F. S. Navarra

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摘要

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.

关键词

qcd sum rules

引用

@article{arxiv.hep-ph/0410071,
  title  = {J/psi D*D* vertex from QCD sum rules},
  author = {M. E. Bracco and M. Chiapparini and M. Nielsen and F. S. Navarra},
  journal= {arXiv preprint arXiv:hep-ph/0410071},
  year   = {2009}
}

备注

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

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