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We study the strong interactions among the heavy bottom spin--1/2 $\Sigma_b$baryon, nucleon and $B$ meson as well as the heavy charmed spin--1/2 $\Sigma_c$baryon, nucleon and $D$ meson in the context of QCD sum rules. We calculate thecorresponding strong coupling form factors defining these vertices by using athree point correlation function. We obtain the numerical values of thecorresponding strong coupling constants via the most prominent structureentering the calculations.

Strong $\Sigma_bNB$ and $\Sigma_cND$ coupling constants in QCD