Investigation of the bottom analog of the [Z.sub.cs] state

Motivated by the recent discoveries of the hidden charm exotic state with strangeness by the BESIII and LHCb Collaborations, we study the S -wave hidden bottom tetraquark with strangeness in two kinds of quark models. Both meson-meson and diquark-antidiquark configurations are taken into account. The numerical results indicate that there is no bound state in both quark models. However, several resonance states have been predicted. Three resonance states with I([J.sup.P]) = 1/2([0.sup.+]) are found, the energy ranges of which are 10479-10550, 10528-10632, and 10597-10681 MeV, respectively. Three resonance states with I([J.sup.P]) = 1([1.sup.+]) are predicted to be located at 10491-10675, 10502-10679, and 10522-10723 MeV, respectively. Moreover, there also exists a resonance with I([J.sup.P]) = 1([2.sup.+]) and the mass is estimated to be 10531-10680 MeV. Besides, the decay widths of these predicted resonances are calculated. All these predicted states in the present work should be accessible for further experiments in LHCb. hidden bottom tetraquark, chiral quark model, quark delocalization color screening model PACS number(s): 13.75.Cs, 12.39.Pn, 12.39.Jh