Strong and radiative decays of D Ξ molecular state and newly observed Ωc states

In this work, we study strong and radiative decays of S-wave DΞ molecular state, which is related to the Ωc∗ states newly observed at LHCb. The coupling between the DΞ molecular state and its constituents D and Ξ is calculated by using the compositeness condition. With the obtained coupling, the partial decay widths of the DΞ molecular state into the Ξc+K-, Ξc′+K-, and Ωc∗(2695)γ final states through hadronic loop are calculated with the help of the effective Lagrangians. By comparison with the LHCb observation, the current results of total decay width support the Ωc∗(3119) or Ωc∗(3050) as DΞ molecule while the decay width of the Ωc∗(3000), Ωc∗(3066), and Ωc∗(3090) can not be well reproduced in the molecular state picture. The partial decay widths are also presented and helpful to further understand the internal structures of Ωc∗(3119) and Ωc∗(3050).