Speaker
Description
Inspired by the forthcoming experimental data at J-PARC and $\overline{P}$ANDA, 3-point vertices chiral Lagrangian for nucleon, delta, $D$ meson and charmed baryon is constructed in the framework of the $\text{SU(2)}$ flavor symmetry. There are 15 terms in the Lagrangian at the chiral power counting orders $Q^{0}$. By applying the heavy-quark symmetry, that is, introducing degeneracy states of pseudoscalar and vector $D$ mesons as well as spin $1/2$ and $3/2$ charmed baryons in the charm quark mass $M_{c} \rightarrow \infty$ limit, we have reduced the coupling constants of the chiral Lagrangian down to 7 free parameters at the leading order of $1/M_{c}$ expansion. The implication of the heavy-quark symmetry in physical processes are discussed. The chiral Lagrangian may be employed to study the charmed hadron production in J-PARC and $\overline{P}$ANDA.