Microscopic derivation of the pion coupling to heavy-light mesons

A. V. Nefediev, J. E. F. T. Ribeiro, Adam P. Szczepaniak

The Goldberger--Treiman relation for heavy--light systems is derived in the context of a quark model. As a paradigmatic example, the case of $\bar{D}\to {\bar{D}}^{\prime }\pi$ is studied in…