Investigation of the tetraquark states in the improved chromomagnetic interaction model* *T. Guo is supported by the Scientific Research Foundation of Chengdu University of Technology (10912-KYQD2022-09557); J. Li and L. He are supported by the National Natural Science Foundation of China (11890712); J. Zhao is supported by the European Union's Horizon 2020 research and innovation program (824093 (STRONG-2020))

Abstract

In the framework of the improved chromomagnetic interaction model, we complete a systematic study of the S-wave tetraquark states (, and ) with different quantum numbers: , , and . The mass spectra of tetraquark states are predicted, and the possible decay channels are analyzed by considering both the angular momentum and -parity conservation. The recently observed hidden-charm tetraquark states with strangeness, such as , , and , can be well explained in our model. Additionally, according to the wave function of each tetraquark state, we find that the low-lying states of each configuration have a large overlap to the and meson basis, instead of the and meson basis. This indicates that one can search these tetraquark states in future experiments via the channel of and mesons.