Zhuo-Ran Huang

QCD sum rule analysis of hidden strange $1^{++}$ tetraquark masses and radial excitations

We revisit the light tetraquark states with quantum numbers $J^{PC}=1^{++}$ using QCD sum rules, focusing on a complete set of derivative-free diquark-antidiquark interpolating currents. By calculating the operator product expansion up to dimension-eight condensates, we extract the ground-state mass of the hidden-stran...