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

2024/05/18 by V. Savinov, Belle Collaboration, I. Adachi +243
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2405.11390

openalex publication_date 2024/05/18 · openalex created_date 2024/05/22 · openalex updated_date 2026/07/30

Abstract

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^(*)0_c using 711~\rm 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 B⁰ branching fractions for these two-body decays with B(Ω_c⁰ → π⁺ Ω^-) in the range between 9.5~× 10^-8 and 31.2~× 10^-8.

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