Nature of the $N^{\ast }$ and $\Delta$ resonances via coupled-channel dynamics

Yu-Fei Wang, Ulf-G. Meißner, Deborah Rönchen +1

This work aims at determining the composition of certain $N^{\ast }$ and $\Delta$ resonances, i.e. whether they are compact states formed directly by quarks and gluons, or hadronic molecules…