Analysis of the vertexes $ \Omega^{{\ast}}_{Q}$ $ \Omega_{Q}^{{\ast}}$ $ \phi$ , $ \Omega^{{\ast}}_{Q}$ $ \Xi_{Q}^{{\ast}}$ K * , $ \Xi_{Q}^{{\ast}}$ $ \Sigma^{{\ast}}_{Q}$ K * and $ \Sigma_{Q}^{{\ast}}$ $ \Sigma^{{\ast}}_{Q}$ $ \rho$ with the light-cone QCD sum rules

K with the light - cone QCD sum rules

K with light - cone QCD sum rules Zhi -

In this article, we study the vertices D∗D∗π and D∗D∗ sK in the framework of the light-cone QCD sum rules approach. The strong coupling constants gD∗D∗π, gD∗D∗ sK play an important role in understanding the final-state rescattering effects in the hadronic B decays. And they are related to the basic parameter g in the heavy quark effective Lagrangian, the existing estimations for g vary in a lar...

K with QCD sum rules

In this article, we assign the D∗ s3(2860) to be a D-wave cs̄ meson, study the vertices D∗ s3(2860)DK and D ∗ s3(2860)D ∗K in details to select the pertinent tensor structures, calculate the hadronic coupling constants GD∗ s3(2860)DK and GD∗ s3(2860)DK with the three-point QCD sum rules and obtain the decay widths Γ (D∗ s3(2860) → D ∗K) and Γ (D∗ s3(2860) → DK). The predicted ratio R = Γ (D∗ s3(...

π with light - cone QCD sum rules

In this article, we take the point of view that the light scalar meson a0(980) is a conventional qq̄ state, and calculate the coupling constants ga0ηπ0 and ga0η′π0 with the light-cone QCD sum rules. The central value of the coupling constant ga0ηπ0 is consistent with the one extracted from the radiative decay φ(1020) → a0(980)γ → ηπ0γ. The central value and lower bound of the decay width Γa0→ηπ0...

with light - cone QCD sum rules Zhi -

In this article, we take the point of view that the light scalar meson a0(980) is a conventional qq̄ state, and calculate the coupling constants ga0ηπ0 and ga0η′π0 with the light-cone QCD sum rules. The central value of the coupling constant ga0ηπ0 is consistent with the one extracted from the radiative decay φ(1020) → a0(980)γ → ηπ0γ. The central value and lower bound of the decay width Γa0→ηπ0...