Speaker
Description
In recent years, a large number of charmonium- and bottomonum-like states have been found in experiments like LHCb, BESIII, Belle(II) and BaBar. While some, like the charged charmonium-like $\mathrm{Zc}(3900)$, are openly exotic, vector mesons like the bottomonium-like $\mathrm{Y}(10753)$ or the charmoniumlike psi(4230) and psi(4360) are more difficult to interpret. Strong signals in hidden-charm (hiddenbottom) decays alongside the absence of matching states in potential model calculations are frequent arguments for an exotic interpretation, although suprisingly little is known about conventional vector quarkonia above open-flavour threshold. Here, I will present the first global, unitary analysis of e+e-to bb and the work towards a global analysis of $\mathrm{e}+\mathrm{e}$ - to cc.
