Investigation of Ξc0 in a chiral quark model

Recently, three new states of Xi(0)(c) were observed in the invariant mass spectrum of Lambda K-+(c)- by LHCb collaboration. In this work, we use a chiral quark model to investigate these three exited states with the help of Gaussian expansion method both in three-quark structure and in five-quark structure with all possible quantum numbers I J (P) = 1/2 (1/2)(-), 1/2 (3/2)(-), 1/2 (5/2)(-), 3/2 (1/2)(-), 3/2 (3/2)(-) and 3/2 (5/2)(-). The calculations shows that the masses of 2S and 1D states of.c are comparable to experimental results; In addition, the resonance states of five-quark configuration are possible candidates of these new states with negative parity by using the real scaling method and their decay width is also given.

Automated summary

The study utilized a chiral quark model and Gaussian expansion method to investigate three new states of Ξ(0)(c), showing consistency with experimental results. Moreover, resonance states of the five-quark configuration with negative parity were identified as potential candidates for these new states using the real scaling method.