Exotics in the $\pi D$ system

Eric B. Gregory, Feng-Kun Guo, Christoph Hanhart +2

In this proceedings we consider several states, namely the $D_{s0}^{\ast }(2317)$, $D_{s1}(2460)$, $D_0^{\ast }(2300)$ and $D_1(2430)$, which appear to defy description as simple quark-ant…