Investigation of the $D_s^{\ast }{D}_s{\eta }^{(\prime )}$ and $B_s^{\ast }{B}_s{\eta }^{(\prime )}$ vertices via QCD sum rules

Abstract

The strong coupling constants among mesons are very important quantities as they can provide useful information on the nature of strong interaction among hadrons as well as the QCD vacuum. In this article, we investigate the strong vertices of the $D_s^{\ast }{D}_s{\eta }^{(\prime )}$ and $B_s^{\ast }{B}_s{\eta }^{(\prime )}$ in the framework of the QCD sum rule approach choosing the $\eta$ or $D_s(B_s)$ meson as an off-shell state. We obtain the results $g_{D_s^{\ast }{D}_s\eta }=(1.46\pm 0.30)Ge{V}^{-1}$, $g_{D_s^{\ast }{D}_s{\eta }^{\prime }}=(0.74\pm 0.16)Ge{V}^{-1}$, $g_{B_s^{\ast }{B}_s\eta }=(5.29\pm 1.06)Ge{V}^{-1}$ and $g_{B_s^{\ast }{B}_s{\eta }^{\prime }}=(2.29\pm 0.48)Ge{V}^{-1}$ for the strong coupling constants under consideration, which can be checked in future experiments.

11 Pages, 4 Figures and 3 Tables

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Cited by in corpus (8)

• Analysis of the strong coupling constant $G_{D_s^{\ast }{D}_s\varphi }$ and the decay width of $D_s^{\ast }\to D_s\gamma$ with QCD sum rules
• Strong coupling constants and radiative decays of the heavy tensor mesons
• Strong $D_s^{\ast }{D}_s{\eta }^{(\prime )}$ and $B_s^{\ast }{B}_s{\eta }^{(\prime )}$ vertices from QCD light-cone sum rules
• Analysis of the strong coupling form factors of ${\Sigma }_{b}NB$ and ${\Sigma }_{c}ND$ in QCD sum rules
• A QCD sum rules calculation of the $J/\psi D_s^{\ast }{D}_s$ strong coupling constant
• Analysis of the strong vertices of ${\Sigma }_{c}N{D}^{\ast }$ and ${\Sigma }_{b}N{B}^{\ast }$ in QCD sum rules
• $B_c{B}_{c}J/\psi$ Vertex Form Factor at Finite Temperature in the Framework of QCD Sum Rules Approach
• Analysis of the strong vertexes of ${\Sigma }_c^{\ast }ND$ and ${\Sigma }_b^{\ast }NB$ in QCD sum rules