Exotic double-charm molecular states with hidden or open strangeness and around 4.5～4.7??GeV

摘要

In this work, we investigate the interactions between the charmed-strange meson ( D s , D s * ) in H -doublet and the (anti-)charmed-strange meson ( D s 1 , D s 2 * ) in T -doublet, where the one boson exchange model is adopted by considering the S ? D wave mixing and the coupled-channel effects. By extracting the effective potentials for the discussed H s T ˉ s and H s T s systems, we try to find the bound state solutions for the corresponding systems. We predict the possible hidden-charm hadronic molecular states with hidden strangeness, i.e., the D s * D ˉ s 1 + c . c . states with J P C = 0 ? ? , 0 ? + and the D s * D ˉ s 2 * + c . c . states with J P C = 1 ? ? , 1 ? + . Applying the same theoretical framework, we also discuss the H s T s systems. Unfortunately, the existence of the open-charm and open-strange molecular states corresponding to the H s T s systems can be excluded.