Search for Two-Body B Meson Decays to Λ⁰ and Ω(*)0c

We report the results of the first search for Standard Model and baryon-number-violating two-body decays of the neutral B mesons to Λ⁰ and Ω(*)0c using 711~fb⁻¹ of data collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e⁺ e⁻ collider. We observe no evidence of signal from any such decays and set 95% confidence-level upper limits on the products of B⁰ and B̄⁰ branching fractions for these two-body decays with B(Ωc⁰ → π⁺ Ω⁻) in the range between 9.5~× 10⁻⁸ and 31.2~× 10⁻⁸.