Topological SU(3)f approach for two-body Ωc weak decays

We explore the two-body nonleptonic weak decays of Ωc0 into final states B(*)M and B(*)V, where B(*) denotes an octet (a decuplet) baryon and M(V) represents a pseudoscalar (vector) meson. We employ the topological SU(3)f approach to depict and parametrize the W-emission and W-exchange processes. We find that the topological parameters can be associated and combined, making them extractable for calculation. Consequently, we explain the partially measured branching fractions relative to B(Ωc0→Ω−π+), recombined or kept as the following ratios: B(Ωc0→Ξ*0K¯*0)/B(Ωc0→Ω−ρ+)=0.28±0.11, B(Ωc0→Ξ−π+)/B(Ωc0→Ξ0K¯0)=0.10±0.02, and B(Ωc0→Ω−K+)/B(Ωc0→Ω−π+)=0.06±0.01. In particular, we present B(Ωc0→Ξ0π0)=(2.3±0.2)×10−4 as half the value of B(Ωc0→Ξ−π+) in the approximate isospin relation, and highlight potential candidates for testing SU(3)f symmetry breaking. Published by the American Physical Society 2025