Single Pion Transitions of Charmed Baryons
  The $SU(2N_{f}) X O(3)$ constituent quark model symmetry of the light diquark system are used to analyze single pion transitions of S-wave to S-wave and P-wave to S-wave heavy baryons. We show that the Heavy Quark Symmetry (HQS) coupling factors are given in terms of the three independent couplings $g_{\Sigma_Q \Lambda_Q \pi}, f_{\Lambda_{Q1} \Sigma_Q \pi}$ and $f_{\Lambda^{*}_{Q1} \Sigma_Q \pi}$.   Light-Front quark model spin wave functions are, then, employed to calculate these couplings and to predict decay rates of single pion transitions between charm baryon states. 
Salam Tawfiq, Patrick J. O'Donnell and J.G. Koerner