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

LHCb 合作通过\(\Xi _{cc}^{++} \rightarrow \Lambda _{c}^{+} K^{-} \pi ^{+} \pi ^ {+}\)在 2017 年。从那时起，提出了一系列双重重子的研究。\(\Xi _{cc}^{++}\)是通过非轻四体衰变模式发现的，实验数据表明\(\Xi _{cc}^{++}\)的衰变模式不被二体和三体中间态饱和。在这项工作中，我们分析了双重重子\(\Xi _{cc}^{++}, \Xi _{cc}^+\)和\(\Omega _{cc} ^+\). 各种通道的衰减幅度根据 SU(3) 不可约幅度进行参数化。我们指出 Cabibbo 允许过程的分支分数\(\Xi _{cc}^{+}\rightarrow \Lambda _c^+\pi ^+ \pi ^0 K^-\) , \(\Omega _{ cc}^{+}\rightarrow \Lambda _c^+\pi ^+ {\overline{K}}^0 K^-\)将有助于搜索\(\Xi _{cc}^+\)和\(\Omega _{cc}^+\)在 LHC、Belle II 和 CEPC 等实验设施的未来测量中。