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arXiv · 2404.19166

Large CP violation in charmed baryon decays

Xiao-Gang He·Chia-Wei Liu
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Abstract

This work presents the first detailed numerical predictions of CP violation in antitriplet charmed baryon decays. Adopting the flavor $SU(3)_F$ symmetry and the final state re-scattering framework, we relate the CKM-suppressed amplitudes to the leading ones, which are proportional to $\lambda_b$ and $\lambda_d$, respectively, with $\lambda_q = V_{uq}V^*_{cq}$. Larger-than-expected CP violations are found, reaching the order of $10^{-3}$, similar in magnitude to those in $D^0 \to \pi^+\pi^- ,K^+K^-$. This opens a promising avenue for observing CP violation in charmed baryon decays and testing the Standard Model.

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Xiao-Gang He, Chia-Wei Liu. 2024-04-30. Large CP violation in charmed baryon decays. https://doi.org/10.1016/j.scib.2025.05.045

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