Recent results on charm spectroscopy Available to Purchase

We present a theoretical framework that accounts for the new D_J and D_sJ mesons measured in the open‐charm sector. These resonances are properly described if considered as a mixture of conventional P‐wave quark‐antiquark states and four‐quark components. The narrowest states are basically P‐wave quark‐antiquark mesons, while the dominantly four‐quark states are shifted above the corresponding two‐meson threshold, being broad resonances. We study the electromagnetic decay widths as basic tools to scrutiny their nature. The proposed explanation incorporates in a natural way the most recently discovered mesons in charmonium espectroscopy.