- Open Access
Measurement of the branching fraction of at Belle
Phys. Rev. D 112, 012013 – Published 15 July, 2025
DOI: https://doi.org/10.1103/4mnw-tvks
Abstract
We report a precise measurement of the ratio of branching fractions using of data from the Belle experiment. We obtain a value of , where the first and second uncertainties are statistical and systematic, respectively. This Belle result is consistent with the previous measurement from the CLEO experiment but has a fivefold improvement in precision. By combining our result with the world average , we obtain the absolute branching fraction , where the uncertainties are statistical, systematic, and the uncertainty in the absolute branching fraction scale , respectively. This measurement can shed light on hadronic decay mechanisms in charmed baryon decays.
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Unless otherwise noted, charge-conjugate modes are always implied throughout this paper.
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