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We investigate the three-body decays of $\Lambda_c^*(2595)$ and$\Lambda_c^*(2625)$ into $\Lambda_c \pi \pi$ by including a direct processgoing through the two-pion coupling of $\Lambda_c^*\Lambda_c \pi \pi$ inaddition to the sequential processes going through $\Sigma_c(2455)$ and$\Sigma_c^*(2520)$. The strength of the direct coupling is related to that ofthe Yukawa coupling by the chiral partner structure between $\Lambda_c$'s and$\Sigma_c$'s, while the strength of the Yukawa coupling is estimated by thequark model. It is found that the direct process gives a considerablecontribution especially in the decay of $\Lambda_c^*(2625)$. A clear indicationof the direct process is seen in an asymmetric pattern in the angularcorrelation between the two pions. We discuss the usefulness of the detailedanalysis of the decays for the study of the structure of $\Lambda_c^*$.

Three-Body Decay of $\Lambda_c^{*}(2595)$ and $\Lambda_c^{*}(2625)$ with the Inclusion of Direct Two-Pion Coupling

Three-Body Decay of $\Lambda_c^{}(2595)$ and $\Lambda_c^{}(2625)$ with the Inclusion of Direct Two-Pion Coupling