Weak decays of doubly heavy baryons: four-body nonleptonic decay channels

The LHCb Collaboration announced the observation of doubly charmed baryon through $$\Xi _{c c}^{++} \rightarrow \Lambda _{c}^{+} K^{-} \pi ^{+} ^{+}$$ in 2017. Since then, a series studies heavy baryons have been presented. _{cc}^{++}$$ was discovered nonleptonic four-body decay mode, and experimental data indicated that modes c}^{++}$$ are not saturated by two- three-body intermediate states. In this work, we analyze weak decays _{cc}^{++}, \Xi _{cc}^+$$ , $$\Omega . Decay amplitudes for various channels parameterized terms SU(3) irreducible amplitudes. We point out branching fractions Cabibbo-allowed processes _{cc}^{+}\rightarrow _c^+\pi ^+ ^0 K^-$$ {\overline{K}}^0 would be helpful to search future measurements at facilities like LHC, Belle II, CEPC.