Charm spectroscopy beyond the constituent quark model

Understand

We study the nature of the new charm and charmonium like states observed in the last few years, using a constituent quark model with an screened confinement potential.

• In the open charm sector we discuss different options for the $D_{sJ}(2860)$ including tetraquark configurations.
• In the hidden charm sector the new Y(4360) and Y(4660) are interpreted as $1^{--}$ states.
• The influence in the puzzling 3940 MeV region of multiquark configuration is discussed.