Predictions of the Strange partner of $T_{cc}$ in the quark delocalization color screening model

TL;DR

This paper investigates the properties of doubly heavy charm tetraquark states with strangeness using the quark delocalization color screening model, predicting a bound state and a resonance with specific masses and widths.

Contribution

It provides a systematic study of strange doubly heavy tetraquarks considering different configurations and highlights the importance of coupled channel effects, predicting new states.

Findings

Predicted a bound state with J^P=1^+ at 3971-3975 MeV.

Predicted a resonance with J^P=0^+ at 4113-4114 MeV.

Estimated the resonance width to be 14.3-16.1 MeV.

Abstract

Inspired by the detection of $T_{cc}$ tetraquark state by LHCb Collaboration, we preform 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 $(3971\sim3975)$ MeV, while the mass and width of the resonance are determined to be $(4113\sim4114)$ MeV and $(14.3\sim 16.1)$ MeV, respectively.