Description of the newly observed Ξc0 states as molecular states

Very recently, three new structures Xi c(2923)0, Xi c(2938)0, and Xi c(2964)0 at the invariant mass spectrum of Lambda c+K- observed by the LHCb Collaboration trigger a hot discussion about their inner structure. In this work, we study the strong decay mode of the newly observed Xi c0 assuming that the Xi c0 is a DLambda -DSigma molecular state. With the possible quantum numbers Jp=1/2 +/- and 3/2 +/-, the partial decay widths of the DLambda -DSigma molecular state into the Lambda c+K-, Sigma c+K-,and Xi c+pi- 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 Xi c(2923)0 as DLambda -DSigma molecule while the decay width of the Xi c(2938)0 and Xi c(2964)0 can not be well reproduced in the molecular state picture. In addition, the calculated partial decay widths with S wave DLambda-DSigma molecular state picture indicate that allowed decay mode, Xi c+pi -, may have the biggest branching ratio for the Xi c(2923)0. The experimental measurements for this strong decay process could be a crucial test for the molecule interpretation of the Xi c(2923)0.