Speaker
Description
Exotic hadron states with quark content beyond conventional meson and baryon models are natural laboratory to study the properties of strong interaction. Charmonium-like state $Z_c(4200)$ with a potentially tetraquark structure was found as an intermediate state in $B^0 \to J/\psi K^{\pm} \pi^{\mp}$ decays. The large width of this state leads to significant interference effects with other intermediate states, e.g. $K^{*}$ mesons. The nature of this state and even its existence is still controversial. Further theoretical studies require high-precision measurements of the properties of this state using amplitude analysis methods.
In this report, the current theoretical and experimental status of studying $Z_c(4200)$ exotic state together with prospects for further research will be presented.
