A coupled-channel quark model study of possible Ξ_cc^(*) K^(*) molecular states

2026/07/21 by Ye Yan, Qi Huang, Yuheng Wu +2
#hep-ph

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Abstract

Inspired by the recent experimental discovery of doubly charmed baryons, we investigate the possible Ξ_cc^(*)K^(*) molecular systems within the framework of the quark delocalization color screening model. The energy spectra and scattering processes of the relevant baryon-meson systems are investigated to explore the dynamical properties of the possible molecular states. The spectrum calculations predict three bound states, namely the I(J^P)=0(1/2^-) Ξ_ccK, the I(J^P)=0(3/2^-) Ξ_cc^*K, and the I(J^P)=0(5/2^-) Ξ_cc^*K^* molecular states. The scattering phase shift analysis further confirms two Ξ_ccK^* resonance states with I(J^P)=0(1/2^-) and 0(3/2^-), which originate from quasi-bound states through channel coupling. In particular, the I(J^P)=0(1/2^-) Ξ_ccK bound state is consistent with previous theoretical studies, making it one of the most promising candidates for future experimental searches.

Citations

• Hadronic molecules
• Nuclear Constitution and the Interpretation of Fission Phenomena

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