One-pion transitions between heavy baryons in the constituent quark model - art. no. 114003

Single pion transitions of S wave to S wave, P wave to S wave and P wave to P wave heavy baryons are analyzed in the framework of the heavy quark symm etry (HQS) limit. We then use a constituent quark model picture for the lig ht diquark system with an underlying SU(2N(f))xO(3) symmetry to reduce the number of the HQS coupling factor required to describe these transitions. A single constituent quark model p-wave coupling is necessary to describe tr ansitions among the S wave ground states. One s-wave and one d-wave couplin g factors are required to determine each of the transitions from the orbita lly symmetric K multiplet and from the orbitally antisymmetric k multiplet down to the ground state. P wave to P wave single pion transitions are desc ribed by altogether eight constituent quark model coupling constants. We al so estimate decay rates of some single pion transitions between charm baryo n states.