Abstract
In order to solve the current experimental controversy on the existence of thetensor glueball ξ(2230), we examine whether the conclusion from Seth's experimentalmeasurement, which rejects existence of ξ(2230), is reliable. We claim that thenon-observation of the resonance structure by Seth is not a sound ground forrejecting the existence of ξ(2230) but it may just indicate that ξ(2230) has abroad width. We also study the tensor glueball properties: the mass, spin, and decaywidth. Our theoretical predictions of the mass and the spin of the ξ(2230) usingQCD sum rule are about 2.23 GeV and J = 2, respectively. Our theoreticalresults also evidently show that the ξ(2230) must have a total decay width of about100 MeV, which is much broader than the reported 20 MeV but a small partial decay widthof 2 MeV into pp̄ decay channel.
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