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We study the internal structure of heavy baryons from their strong decays with pion emissions in the chiral quark model. We evaluate the decay widths of the known excited states of heavy baryons with various flavors. It is found that the low-lying excited states can be described reasonably well. However, the discrepancy with the data is observed when describing the decay of the ground state $\Sigma_c$ and the Roper-like $\Lambda_c(2765)$. Here, we demonstrate that such discrepancy will be significantly reduced by introducing the relativistic correction with the help of the Foldy-Wouthuysen-Tani transformation. Furthermore, we will also show how the two-pion emission decays can be useful to determine the spin and parity of heavy baryons.
WebEx: https://knu.webex.com/knu/j.php?MTID=m6344ead9ce4a5d0436522a834815c62c
Host: Prof. Yongseok Oh