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TESTING March 23, 2026

Charmed baryon decays at Belle and Belle II

Authors

Jaeyoung Kim

Abstract

Belle and Belle II experiments have collected $e^+e^-$ collision data with center-of-mass energies at or near the $Υ(4S)$ resonance. Using total $1.4\,\mathrm{ab}^{-1}$ combined dataset, we present new measurements of branching fractions for $Ξ_c^{0/+}$ and $Λ_c^+$ 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.

Metadata

arXiv ID: 2603.21722
Provider: ARXIV
Primary Category: hep-ex
Published: 2026-03-23
Fetched: 2026-03-24 06:02

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