A next-to-leading-order QCD sum rule analysis predicts the 2++ di-gluonium mass at about 3.0 to 3.2 GeV and disfavors identifying f2(2010), f2(2300), and f2(2340) as pure glueballs.
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$2^{++}$ Di-gluonium from LSR at higher order
A next-to-leading-order QCD sum rule analysis predicts the 2++ di-gluonium mass at about 3.0 to 3.2 GeV and disfavors identifying f2(2010), f2(2300), and f2(2340) as pure glueballs.