Predictions for CP violation in anti-triplet beauty baryon to charmonium decays
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arXiv
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| Format: | Preprint |
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2025
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| author | Sun, Jin Xing, Zhi-Peng He, Xiao-Gang |
| author_facet | Sun, Jin Xing, Zhi-Peng He, Xiao-Gang |
| contents | Motivated by the recent 3.9$σ$ evidence for CP violation from the LHCb collaboration in decays of an anti-triplet beauty baryon to a charmonium, an octet baryon, and a pseudoscalar meson, we perform, for the first time, a systematic analysis of this class of decays within the framework of flavor $SU(3)$ symmetry.
Several predictions for branching ratios and CP violating relations which can be tested in future experiments are found, in particular $ΔA_{CP} = A_{CP}(Λ_b^0 \to p π^- J/ψ) - A_{CP}(Λ_b^0 \to p K^- J/ψ) = A_{CP}(Λ_b^0 \to n π^0 J/ψ) - A_{CP}(Λ_b^0 \to (n K_S, n K_L) J/ψ)$. Our results provide guidance to test the availability of $SU(3)$ symmetry and search for possible CP violation effects in this class of decays. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_06008 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Predictions for CP violation in anti-triplet beauty baryon to charmonium decays Sun, Jin Xing, Zhi-Peng He, Xiao-Gang High Energy Physics - Phenomenology Motivated by the recent 3.9$σ$ evidence for CP violation from the LHCb collaboration in decays of an anti-triplet beauty baryon to a charmonium, an octet baryon, and a pseudoscalar meson, we perform, for the first time, a systematic analysis of this class of decays within the framework of flavor $SU(3)$ symmetry. Several predictions for branching ratios and CP violating relations which can be tested in future experiments are found, in particular $ΔA_{CP} = A_{CP}(Λ_b^0 \to p π^- J/ψ) - A_{CP}(Λ_b^0 \to p K^- J/ψ) = A_{CP}(Λ_b^0 \to n π^0 J/ψ) - A_{CP}(Λ_b^0 \to (n K_S, n K_L) J/ψ)$. Our results provide guidance to test the availability of $SU(3)$ symmetry and search for possible CP violation effects in this class of decays. |
| title | Predictions for CP violation in anti-triplet beauty baryon to charmonium decays |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2511.06008 |