Analysis of the strong vertexes of $Sigma_c^{*} ND$ and $Sigma_b^{*}NB$ in QCD sum rules


Abstract in English

In this article, we analyze the strong vertexes $Sigma_{c}^{*}ND$ and $Sigma_{b}^{*}NB$ using the three-point QCD sum rules under the Dirac structure of $q!!!/p!!!/gamma_{mu}$. We perform our analysis by considering the contributions of the perturbative part and the condensate terms of $<overline{q}q>$ and $<frac{alpha_{s}}{pi}GG>$. After the form factors are calculated, they are then fitted into analytical functions which are used to get the strong coupling constants for these two vertexes. The final results are $g_{Sigma_{c}^{*}ND}=7.19^{+8.49}_{-3.11}pm1.76$ and $g_{Sigma_{b}^{*}NB}=10.54^{+15.59}_{-5.23}pm1.82$.

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