Hunting for the hidden-charm molecular states with strange quark in $B$ and $B_s$ decays

Abstract

In the present work, we investigate the productions of the molecular states composed of D ( * ) s D( * ) and D ( * ) s D( * ) s in the B and B s decays by using an effective Lagrangian approach. The branching ratios in terms of the model parameter α and the binding energy ∆E are estimated. Our estimations indicate that the branching fractions are of the order of 10 −4 and the relative ratios are very weakly dependent on the model parameter α and the binding energy ∆E. The predicted ratios are helpful for searching the hidden-charm molecular states with strange quark in the future experiments at Belle II and LHCb.

Bottomoniumlike tetraquarks in a chiral quark model

“…Within the same configuration, production and strong decay properties of the X(3960) have been studied in Refs. [83][84][85][86][87]. A mixture of a conventional cc state and D s Ds continuum is found to be the correct mechanism to describe the X(3960) state in an effective field theory study [88].…”

Searching for doubly charmed tetraquark candidates $$T_{cc}$$ and $$T_{cc\bar{s}}$$ in $$B_c$$ decays

“…[80][81][82], the production of tetraquark candidates Z c (3900), Z c (4020) and X (3872) in B c decays has ever been discussed. The contributions from rescattering processes in weak decays are also widely discussed in the literature [83][84][85][86][87][88][89][90][91][92][93][94]. c is treated as a spectator.…”