$g_{D_s^{\ast }D{K}^{\ast }(892)}$ and $g_{B_s^{\ast }B{K}^{\ast }(892)}$ coupling constants in QCD sum rules

Abstract

The coupling constants $g_{D_s^{\ast }D{K}^{\ast }(892)}$ and $g_{B_s^{\ast }B{K}^{\ast }(892)}$ are calculated in the framework of three-point QCD sum rules. The correlation functions responsible for these coupling constants are evaluated considering contributions of both $D(B)$ and $K^{\ast }(892)$ mesons as off-shell states, but in the absence of radiative corrections. The results, $g_{D_s^{\ast }D{K}^{\ast }(892)}=(4.31\pm 1.42)Ge{V}^{-1}$ and $g_{B_s^{\ast }B{K}^{\ast }(892)}=(3.24\pm 1.08)Ge{V}^{-1}$ are obtained for the considered strong coupling constants.

13 Pages and 11 Figures

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Cited by in corpus (9)

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• The strong vertices of bottom mesons $B$, $B^{\ast }$ and bottomonia ${\rm Y}$, ${\eta }_b$
• An improved calculation of the $D_{(s)}^{\ast }{D}_{(s)}V$ and $B_{(s)}^{\ast }{B}_{(s)}V$ couplings from light-cone sum rules
• Strong coupling constants of charmed and bottom mesons with light vector mesons in QCD sum rules
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