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

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arxiv 2405.11390 v1 pith:7XXRW4XQ submitted 2024-05-18 hep-ex

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

Belle Collaboration: V. Savinov , I. Adachi , J. K. Ahn , H. Aihara , D. M. Asner , H. Atmacan , R. Ayad , Sw. Banerjee
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classification hep-ex
keywords decaysomegatwo-bodylambdasearchtimesasymmetric-energybaryon-number-violating
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We report the results of the first search for Standard Model and baryon-number-violating two-body decays of the neutral $B$ mesons to $\Lambda^{0}$ and $\Omega^{(*)0}_c$ using 711~${\rm fb^{-1}}$ of data collected at the $\Upsilon(4S)$ 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 $B^0$ and $\bar{B}^0$ branching fractions for these two-body decays with $\mathcal{B}(\Omega_{c}^{0} \to \pi^+ \Omega^-)$ in the range between 9.5~$\times 10^{-8}$ and 31.2~$\times 10^{-8}$.

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