One-Pion Charm Baryon Transitions in a Relativistic Three-Quark Model
  We study one-pion transitions between charm baryon states in the framework of a relativistic three-quark model. We calculate the charm baryon-pion coupling factors that govern the S-wave, P-wave and D-wave one-pion transitions from the s-wave and the lowest lying p-wave charm baryon states down to the s-wave charm baryon states. For these we obtain: g_{\Sigma_c\Lambda_c\pi}=8.88 GeV^{-1}, f_{\Lambda_{c1}\Sigma_c\pi}=0.52 and f_{\Lambda_{c1}^*\Sigma_c\pi}=21.5 GeV^{-2}. We compare our rate predictions for the one-pion transitions with experimental results. 
M. A. Ivanov (JINR, Dubna), J. G. Korner (Mainz U., Inst. Phys.), V.   E. Lyubovitskij (JINR, Dubna and Tomsk U.), A. G. Rus...