Charged charmonium-like structures and the initial single chiral particle emission mechanism

This paper summarizes what we have done so far to explain charged charmonium/bottomonium-like structures using a hadronic triangle diagram which we call the initial single chiral particle emission mechanism. We discuss processes like $A\to A^{\mathrm{\prime }}+P+P^{\mathrm{\prime }}$ in which two chiral particles $P$ and $P^{\mathrm{\prime }}$ are emitted from $A$. In the intermediate we consider a hadronic one-loop diagram in which $D^{(\ast )}\mathrm{/}{D}_s^{(\ast )}\mathrm{/}{B}^{(\ast )}\mathrm{/}{B}_s^{(\ast )}$ are included to explain some enhancements experimentally observed. Using this mechanism we explain some of the exotic enhancements and predict a couple of enhancement structures.