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We study the nonleptonic three-body charmed baryon weak decays of B₂₍PP^ under the SU (3) ₅ flavor symmetry, where B₂ denotes the anti-triplet charmed baryon, comprising (^0₂, -^+₂, ^+₂), and B₍ and P (P^) represent octet baryon and pseudoscalar meson states, respectively. In addition to 12 parameters from the contributions of the color-antisymmetric part of the effective Hamiltonian, denoted as H (6), there are 4 parameters from the color-symmetric one, H (15), which were not included in the previous study. With 16 parameters in total and 28 experimental data points, we obtain the minimal ² over degree of freedom of ^2/d. o. f=1. 5, which is a great improvement comparing to that without H (15). With the better fitting values, we evaluate the branching ratios and up-down asymmetries of B₂₍PP^, which present some interesting results such as B\, (^+₂ ( (1690) ^0^+K^-) \, K^+) (1. 50. 4) 10^-3 and potential SU (3) breaking effects in ^+₂ p^+K^- and ^+₂ ^+^-K^+ to be verified by the experiments at BESIII, Belle-II and LHCb.
Geng et al. (Mon,) studied this question.
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