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arXiv · 2610.27760

Charmed baryon decays at BESIII

Chengzhi He
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Abstract

BESIII has accumulated 6.4~fb$^{-1}$ of $e^+e^-$ collision data at center-of-mass energies from 4.60 to 4.95~GeV, corresponding to the world's largest sample of $Λ_c^+\barΛ_c^-$ pairs. This proceeding summarizes recent BESIII results on charmed baryon decays, including the first observation of the transverse polarization of the $Λ_c^+$ in $e^+e^-\toΛ_c^+\barΛ_c^-$, a precision measurement of the inclusive decay $Λ_c^+\toΛX$, the first observations of $Λ_c^+\to ne^+ν_e$ and $Λ_c^+\to nπ^+η$ with deep-learning techniques, the first observation of $Λ_c^+\to pK^-e^+ν_e$ together with evidence for $Λ_c^+\toΣ^\pmπ^\mp e^+ν_e$, and partial wave analyses of $Λ_c^+\toΛπ^+η$.

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Chengzhi He. 2026-10-20. Charmed baryon decays at BESIII. https://arxiv.org/abs/2610.27760

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