7 papers
Subtraction of infrared divergences in light-quark QCD sum rules
Ding-Kun Lian, Jin-Peng Zhang, Zi-Xi Ou-Yang +4
In QCD sum rules for light-quark systems, infrared (IR) divergences can appear in the Wilson coefficients of certain condensates. These divergences manifest explicitly in the coord…
Investigations on heavy quarkonium hybrid mesons with exotic quantum numbers
Qi-Nan Wang, Ding-Kun Lian, Hua-Xing Chen +1
We investigate the heavy quarkonium hybrid mesons with exotic quantum numbers via QCD sum rule method. We construct the currents with three Lorentz indices and calc…
Predictions of masses for light hybrid baryons
Qi-Nan Wang, Ding-Kun Lian, Wei Chen +4
Within the method of parity-projected QCD sum rules, we study the mass spectra of light hybrid baryons with $I(J^{P})=1/2(1/2^{\pm}), 3/2(1/2^{\pm}), 1/2(3/2^{\pm}), 3/2(3/2^{\pm})…
Doubly charmed pentaquark states with strangeness
Wei Chen, Feng-Bo Duan, Zi-Yan Yang +3
In this work, we have studied the mass spectra of doubly charmed pentaquark states with strangeness by using the method of QCD sum rules. We use the parity projected sum…
Light hybrid baryons in QCD sum rules
Wei Chen, Qi-Nan Wang, Ding-Kun Lian +4
We have calculated the mass spectra of nucleon and delta hybrid baryons with both positive-parity and negative-parity by using the method of QCD sum rules. We predicte that the low…
Interpreting the and as light tetraquark states
Qi-Nan Wang, Ding-Kun Lian, Wei Chen
Inspired by the states and reported by the BESIII Collaboration, we systematically investigate the mass spectra of light compact tetraquark states with configur…