QCD sum rules at NLO with derivative-inserted currents yield masses for several J^P=2± nonets and J=0,1 states that match experimental values.
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Probing Excited $q\bar{q}$ Mesons via QCD Sum Rules
QCD sum rules at NLO with derivative-inserted currents yield masses for several J^P=2± nonets and J=0,1 states that match experimental values.