Glueball Interpretation of $ξ$(2230)

Abstract

On the basis of the results of $ξ(2230)\rightarrowπ^{+}π^{-}, p\bar{p}$ and $K\bar{K}$, measured by the BES Collaboration in radiative J/$ψ$ decays, combined with the upper limit of Br($ξ\rightarrow p\bar{p}$)Br($ξ\rightarrow K\bar{K}$), measured by PS185 experiment, we argue that the distinctive properties of $ξ$(2230), the flavor-symmetric decays and the narrow partial decay widths to $ππ$ and $K\bar{K}$ as well as its copious production in radiative J/$ψ$ decay, would strongly favor the glueball interpretation of $ξ$(2230).