LAUSR

In this work, we systemically investigate the molecular states from the interaction with the help of the Lagrangians with heavy quark and chiral symmetries in a quasipotential Bethe–Salpeter equation (qBSE) approach. The molecular states are produced from isodoublet (I=1/2) interaction with spin parity and interaction with and . Their masses and widths are consistent with the , and observed at LHCb. The states, , and , are also produced with the same parameters. The isodoublet interaction with , as well as the isoquartet (I=3/2) interactions with and , interaction with and , are also attractive while very large cutoff is required to produce a molecular state. We also investigate the origin of the widths of these molecular states in the same qBSE frame. The channel is dominant in the decays of the states, , , , and . The state has large coupling to channel while the , and channels provide similar contributions to the width of the state. These results will be helpful to understand the current LHCb experimental results, and the three predicted states and the decay pattern of these hidden-charmed molecular pentaquarks can be checked in future experiments.