arXiv subjects
Publications and source records attributed to M. Rho.
Heavy-quark baryons are described as a bound heavy-meson-soliton system in a Lagrangian that combines chiral symmetry and heavy-quark symmetry. We introduce a ``Wess-Zumino type" term and show that it dominates the binding of a heavy meson to a soliton. The connection between this model and the Callan-Klebanov model is established to $O(N_c^{-1} \cdot m_Φ^0)$ where $m_Φ$ is the mass of the heavy-meson (isospin) doublet $Φ$ or $Φ^*$.
We derive an effective action combining chiral and heavy quark symmetry, using approximate bosonization techniques of QCD. We explicitly show that the heavy-quark limit is compatible with the large $N_c$ (number of color) limit in the meson sector, and derive specific couplings between the light and heavy mesons ($D$, $D^*$, ...) and their chiral partners. The relevance of this effective action to solitons with heavy quarks describing heavy baryons is discussed.