Analysis of the vector meson transitions among the heavy quarkonium   states
  In this article, we study the vector meson transitions among the charmonium and bottomonium states with the heavy quark effective theory in an systematic way, and make predictions for the ratios among the vector meson decay widths of a special multiplet to another multiplet. The predictions can be confronted with the experimental data in the future. 
Zhi-Gang Wang
hep-ph