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摘要
In this article, we study the vertices D*D*P, D*DV and DDV with the light-cone QCD sum rules. The strong coupling constants g(D*D*P), g(D*DP), f(D*DV), f(D*D*V), g(DDV) and g(D*D*V) play an important role in understanding the final-state interactions in the hadronic B decays. They relate to the basic parameters g, alpha and beta in the heavy quark effective Lagrangian respectively. Our numerical values of the g, beta and lambda are much smaller than most of the existing estimations. If the predictions from the light-cone QCD sum rules are robust, the final-state interaction effects maybe overestimated in the hadronic B decays.
- 出版日期2007-11-15
- 单位华北电力大学
