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arXiv · 2603.21722

Charmed baryon decays at Belle and Belle II

Jaeyoung Kim
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Abstract

Belle and Belle II experiments have collected $e^+e^-$ collision data with center-of-mass energies at or near the $\Upsilon(4S)$ resonance. Using total $1.4\,\mathrm{ab}^{-1}$ combined dataset, we present new measurements of branching fractions for $\Xi_c^{0/+}$ and $\Lambda_c^+$ baryons, including several first observations. Additionally, we report the initial search for $CP$ violation in singly Cabibbo-suppressed three-body decays of charmed baryons, providing a test of $U$-spin symmetry.

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Jaeyoung Kim. 2026-03-23. Charmed baryon decays at Belle and Belle II. https://arxiv.org/abs/2603.21722

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