6 papers
SU(3)-flavor breaking as a structural probe of hidden-charm-strange tetraquarks in a color-octet basis
Bing-Dong Wan, Jun-Hao Zhang, Yan Zhang +1
We study hidden-charm-strange tetraquark candidates with the exotic quantum number to test whether SU(3)-flavor breaking acts as a universal mass shift or as a stru…
Spectroscopy of hidden-heavy tetraquark states with in a color-octet configuration
Bing-Dong Wan, Jun-Hao Zhang, Yan Zhang +1
Within the QCD sum-rule framework, we investigate hidden-heavy tetraquark channels with the exotic quantum number using four representative local color-octet--octet…
Nodal mechanism for the suppressed decay of in the Bethe--Salpeter framework
Bing-Dong Wan, Sheng-Qi Zhang
The strong decay is anomalously suppressed despite ample phase space, whereas the and channels remain sizable. In this work, we stud…
Light baryonium states with exotic quantum numbers
Bing-Dong Wan, Jun-Hao Zhang, Yan Zhang +1
The existence of baryonium-bound or resonant states composed of a baryon and an antibaryon has long been postulated as a natural extension of conventional hadron spectroscopy. In t…
QCD sum rule analysis of local meson-meson currents for the state
Yi-Qi Mu, Peng-Wen Xu, Si-Tong Chen +3
The nature of the recently observed state, reported by the COMPASS Collaboration as a candidate for a strange crypto-exotic meson with , remains unclear. In this…
Gluonic Hidden-charm Tetraquark States
Bing-Dong Wan, Shuo Yang
In this paper, a new type of hybrid state, which consists of two valence quarks and two valence antiquarks together with a valence gluon, the gluonic tetraquark states, are investi…