Study of double-charm and double-strange tetraquark Xccs over bar s over bar

In the framework of the quark delocalization color screening model, we search for the double-charm and double-strange tetraquark Xccs over bar s over bar with two structures: Qq over bar - Qq over bar and QQ - q over bar q over bar . The bound-state calculation shows that there is no bound state in the present work. However, by applying a stabilization calculation and coupling all channels of both structures, two new resonance states with IJP 1/4 00 thorn are obtained, one with mass and width around 4250 and 6 MeV, respectively, and another one with mass and width around 4300 and 19 MeV, respectively. Both of these states are more likely to be the compact resonance states. Although no significant signals were observed in the present experiment at the Belle Collaboration, there are still some structures around 4.3 GeV in the distributions of MD thorn s D thorn s and MD ⠂ thorn s D ⠂ thorn s . We suggest that the experiment can be further tested with a larger amount of data.

Automated summary

In this study, we explore the double-charm and double-strange tetraquark states with two structures within the framework of the quark delocalization color screening model. We find two new resonance states by applying a stabilization calculation and coupling all channels, with mass and width around 4250 and 6 MeV, and 4300 and 19 MeV, respectively. These states are more likely to be compact resonance states. Although no significant signals were observed in the present experiment, further testing with a larger amount of data is suggested.