Analysis of the Hidden-charm Tetraquark molecule mass spectrum with the QCD sum rules

In this paper, we investigate the mass spectrum of the ground state hidden-charm tetraquark molecular states without strange, with strange and with hidden-strange via the QCD sum rules in a comprehensive way and revisit the assignments of the X, Y, Z states in the scenario of tetraquark molecular states consistently based on the QCD sum rules.

Automated summary

This paper comprehensively investigates the mass spectrum of hidden-charm tetraquark molecular states through QCD sum rules and reexamines the assignments of X, Y, Z states in the tetraquark molecular states scenario consistently based on QCD sum rules.