Charmed Baryon Weak Decays with SU(3) Flavor Symmetry

We study the semileptonic and non-leptonic charmed baryon decays with $SU(3)$ flavor symmetry, where the charmed baryons can be ${\bf B}{c}=(\Xi_c^0,\Xi_c^+,\Lambda_c^+)$,${\bf B}'{c}=(\Sigma_c^{(++,+,0)},\Xi_{c}^{\prime(+,0)},\Omega_c^0)$,${\bf B}{cc}=(\Xi{cc}^{++},\Xi_{cc}^+,\Omega_{cc}^+)$,or${\bf B}{ccc}=\Omega^{++}{ccc}$\mathrm{.}With${\bf B}n^{(\prime)}$ denoted as the baryon octet (decuplet), we find that the ${\mathbf{B}}_c\to {\mathbf{B}}_n^{\mathrm{\prime }}{\mathrm{\ell }}^{+}{\nu }_{\mathrm{\ell }}$ decays are forbidden, while the ${\mathrm{\Omega }}_c^0\to {\mathrm{\Omega }}^{-}{\mathrm{\ell }}^{+}{\nu }_{\mathrm{\ell }}$, ${\mathrm{\Omega }}_{cc}^{+}\to {\mathrm{\Omega }}_c^0{\mathrm{\ell }}^{+}{\nu }_{\mathrm{\ell }}$, and $\Omega{ccc}^{++}\to \Omega_{cc}^+\ell^+\nu_\ell$ decays are the only existing Cabibbo-allowed modes for ${\mathbf{B}}_c^{\mathrm{\prime }}\to {\mathbf{B}}_n^{\mathrm{\prime }}{\mathrm{\ell }}^{+}{\nu }_{\mathrm{\ell }}$, ${\bf B}{cc}\to {\bf B}'c\ell^+\nu\ell$,and${\bf B}{ccc}\to {\bf B}{cc}^{(\prime)}\ell^+\nu\ell$,respectively\mathrm{.}Wepredicttherarelystudied${\bf B}{c}\to {\bf B}n^{(\prime)}M$decays,suchas${\cal B}(\Xi_c^0\to\Lambda^0\bar K^0,,\Xi_c^+\to\Xi^0\pi^+)=(8.3\pm 0.9,8.0\pm 4.1)\times 10^{-3}$and${\cal B}(\Lambda_c^+\to \Delta^{++}\pi^-,,\Xi_c^0\to\Omega^- K^+)=(5.5\pm 1.3,4.8\pm 0.5)\times 10^{-3}$\mathrm{.}Fortheobservation,thedoublyandtriplycharmedbaryondecaysof$\Omega{cc}^{+}\to \Xi_c^+\bar K^0$,$\Xi{cc}^{++}\to (\Xi_c^+\pi^+$,$\Sigma_c^{++}\bar K^0)$,and$\Omega_{ccc}^{++}\to (\Xi_{cc}^{++}\bar K^0,\Omega_{cc}^+\pi^+,\Xi_c^+ D^+)$ are the favored Cabibbo-allowed decays, which are accessible to the BESIII and LHCb experiments.