We investigate the observed pentaquark candidates Pc(4312), Pc(4440) and Pc(4457) from the latest LHCb measurement, as well as four possible spin partners in theD ( * ) Σ * c system predicted from the heavy quark spin symmetry with the hadronic molecule scenarios. Similar to the previous calculation on Pc(4380) and Pc (4450), the partial widths of all the allowed decay channels for these Pc states are estimated with the effective Lagrangian method. The cutoff dependence of our numerical results are also presented. Comparing with the experimental widths, our results show that Pc(4312), Pc(4440) and Pc(4457) can be described well with the spin-parity-1/2 − -DΣc, 1/2 − -D * Σc and 3/2 − -D * Σc molecule pictures, respectively.

Very recently, a new Ω * state was reported by the Belle Collaboration, with its mass of 2012.4 ± 0.7 (stat) ± 0.6 (syst) MeV, which locates just below the KΞ * threshold and hence hints to be a possible KΞ * hadronic molecule. Using the effective Lagrangian approach as the same as our previous works for other possible hadronic molecular states, we investigate the decay behavior of this new Ω * state within the hadronic molecular picture. The results show that the measured decay width can be reproduced well and its dominant decay channel is predicted to be the KπΞ three-body decay. This suggests that the newly observed Ω * may be ascribed as the J P = 3/2 − KΞ * hadronic molecular state and can be further checked through its KπΞ decay channel. *