The $g_{J/\psi D_s{D}_s}$ strong coupling constant from QCD Sum Rules

Abstract

The coupling constant of the meson vertex $J/\psi D_s{D}_s$ is calculated using the three point correlation function within the QCD Sum Rule formalism. We have considered alternately mesons $J/\psi$ and $D_s$ off-shell together with non-perturbative contributions up to the mixed quark-gluon condensates. When extrapolated, these two different form factors give the same coupling constant for the process $g_{J/\psi D_s{D}_s}=5.98_{-0.58}^{+0.67}$.

15 pages, 6 figures

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Cited by in corpus (13)

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• 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
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• Analysis of the strong vertices of ${\Sigma }_{c}N{D}^{\ast }$ and ${\Sigma }_{b}N{B}^{\ast }$ in QCD sum rules
• Analysis of the strong vertexes of ${\Sigma }_c^{\ast }ND$ and ${\Sigma }_b^{\ast }NB$ in QCD sum rules
• The $D_{s}D{K}^{\ast }$ vertex in QCD Sum Rules: form factors and coupling constant
• Heavy-meson chiral Lagrangians, effective flavored couplings, SU(4) flavor breaking and their consequences
• Charmed Mesons and Charmonia: Three-Meson Strong Couplings
• Strong Couplings of Three Mesons with Charm(ing) Involvement