The strong $Λ_bNB$ and $Λ_cND$ vertices

Abstract

We investigate the strong vertices among $Λ_b$, nucleon and $B$ meson as well as $Λ_c$, nucleon and $D$ meson in QCD. In particular, we calculate the strong coupling constants $g_{Λ_bNB}$ and $g_{Λ_cND}$ for different Dirac structures entered the calculations. In the case of $Λ_cND$ vertex, the result is compared with the only existing prediction obtained at $Q^2=0$.

12 Pages, 3 Figures and 4 Tables