Predictions of the strange partner of T c c in the quark delocalization color screening model

Inspired by the detection of T c c tetraquark state by LHCb Collaboration, we perform a systemical investigation of the low-lying doubly heavy charm tetraquark states with strangeness in the quark delocalization color screening model in the present work. Two kinds of configurations, the meson-meson configuration and diquark-antidiquark configuration, are considered in the calculation. Our estimations indicate that the coupled channel effects play important role in the multiquark system, and a bound state with J P = 1 + and a resonance state with J P = 0 + have been predicted. The mass of the bound state is evaluated to be (3971–3975) MeV, while the mass and width of the resonance are determined to be (4113–4114) MeV and (14.3–16.1) MeV, respectively.