Single heavy baryons with chiral partner structure in a three-flavor chiral model

We construct an effective hadronic model including single heavy baryons (SHBs) belonging to the $(\mathbf{3},\mathbf{3})$ representation under $SU(3{)}_L\times SU(3{)}_R$ symmetry, respecting the chiral symmetry and heavy-qaurk spin-flavor symmetry. When the chiral symmetry is spontaneously broken, the SHBs are divided into the baryons with negative parity of $\bar{\mathbf{3}}$ representation under $SU(3)$ flavor symmetry which is the chiral partners to the ones with positive parity of $\mathbf{6}$ representation. We determine the model parameters from the available experimental data for the masses and strong decay widths of ${\mathrm{\Sigma }}_c^{(\ast )}$, ${\mathrm{\Lambda }}_c(2595)$, ${\mathrm{\Xi }}_c(2790)$, and ${\mathrm{\Xi }}_c(2815)$. Then, we predict the masses and strong decay widths of other baryons including ${\mathrm{\Xi }}_b$ with negative parity. We also study radiative decays of SHBs including ${\mathrm{\Omega }}_c^{\ast }$ and ${\mathrm{\Omega }}_b^{\ast }$ with positive parity.