Abstract
In this work, we carry out the study of hidden-charm hexaquark states with the typical configurations $qqc\bar{q}\bar{q}\bar{c}$ ($q=u, d, s$). The mass spectra of hidden-charm hexaquark states are obtained within the chromo-magnetic interaction model. In addition to the mass spectra analysis, we further illustrate their two-body strong decay behaviors. There exist some compact bound states which cannot decay through the strong interaction. Hopefully our results will help to search for such types of the exotic states in the future experiments.
Highlights
The mass spectra of hidden-charm hexaquark states are obtained within the chromomagnetic interaction model
The first doubly charm tetraquark Tþcc with the configuration ccudwas observed by the LHCb Collaboration [12], and this newly discovered particle is explicitly an exotic state which cannot be classified into the conventional mesons
The dÃð2380Þ resonance with IðJPÞ 1⁄4 0ð3þÞ has been reported by CELSIUS/WASA and WASA-at-COSY Collaborations [13–15], and it is expected to be a dibaryon which contains 6 constituent quarks
Summary
With the improvement of the luminosity and precision in experiment, more and more charmoniumlike XYZ states and Pc states have been observed [1–11]. The hexaquark states were proposed and the spectra of light-flavored hexaquarks were dynamically investigated very early after the birth of quark model. G. Cotugno et al suggested that the two observations of Yð4660Þ and Yð4630Þ are likely to be due to the same state constituted by four quarks in Ref. Yð4630Þ was observed in process eþe− → ΛcΛc in the Belle experiments [56] and is considered as a candidate of ΛcΛc bound state [57]. In this work we systemically investigate their mass spectra, stability, and two-body decay within the chromomagnetic interaction (CMI) model. The CMI model has been successfully adopted to study the mass spectra and stability of multiquark states [68–88].
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