We study the three-body baryonic decay \( \bar {B}^{0}\rightarrow {{\varLambda }}^{+}_{c} \bar {p} \pi ^{0}\) based on the factorization approach. The most important Feynman diagrams for this decay mode are factorizable and non-factorizable contributions, so that the former plays the key role in the decay amplitude and the latter affects the amplitude coefficient a₂. We calculate the decay branching ratio for some values of a₂ in the range of 0.16 − 0.40 and we find that the value of a₂ = 0.17 leads us to the result of (1.50 ± 0.21) × 10^− 4 which evidently agrees with the experimental result (1.55 ± 0.17 ± 0.08) × 10^− 4 reported by BABAR.

我们研究三体重子衰变\( \bar {B}^{0}\rightarrow {{\varLambda }}^{+}_{c} \bar {p} \pi ^{0}\)基于分解方法。这种衰减模式最重要的费曼图是可分解和不可分解的贡献，因此前者在衰减幅度中起关键作用，后者影响幅度系数a ₂。我们计算了a ₂在 0.16 − 0.40 范围内的某些值的衰减分支比，我们发现a ₂ = 0.17的值导致我们得到 (1.50 ± 0.21) × 10 ^{− 4}的结果，这显然与BABAR 报告的实验结果 (1.55 ± 0.17 ± 0.08) × 10 ^{− 4}。