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

H. Sundu; K. Azizi

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g_{D^(ast)_(s)D K^(ast)(892)} and g_{B^(ast)_(s)B K^(ast)(892)} coupling constants in QCD sum rules

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arxiv 1009.5320 v2 pith:4CR3FPNH submitted 2010-09-27 hep-ph

g_{D^(ast)_(s)D K^(ast)(892)} and g_{B^(ast)_(s)B K^(ast)(892)} coupling constants in QCD sum rules

K. Azizi , H. Sundu This is my paper

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The coupling constants $g_{D^{\ast}_{s}D K^{\ast}(892)}$ and $g_{B^{\ast}_{s}B K^{\ast}(892)}$ 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 $K^*(892)$ mesons as off-shell states, but in the absence of radiative corrections. The results, $g_{D^{\ast}_{s}D K^{\ast}(892)}=(4.31\pm1.42) GeV^{-1}$ and $g_{B^{\ast}_{s}B K^{\ast}(892)}=(3.24\pm1.08) GeV^{-1}$ are obtained for the considered strong coupling constants.

g_{D^(ast)_(s)D K^(ast)(892)} and g_{B^(ast)_(s)B K^(ast)(892)} coupling constants in QCD sum rules

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