Spectroscopy of heavy baryons with breaking of heavy-quark symmetry

Understand

Transition decay widths by one-pion emissions for excited heavy-baryons with a single heavy (charm and bottom) quark are investigated by following the heavy-quark symmetry and its breaking effects at ${\cal O}(1/M)$ for a heavy-baryon mass $M$.

• Based on the heavy-baryon effective theory, interaction Lagrangian for the heavy baryons with axial-vector current induced by a pion is constructed.
• It is presented that the transition decay widths up to ${\cal O}(1/M)$ in several channels are constrained.
• The results will be useful in experimental study of excited heavy-baryons.