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| Autore principale: | |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| Accesso online: | https://arxiv.org/abs/2312.17486 |
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| _version_ | 1866914624592412672 |
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| author | Wang, Xiongfei |
| author_facet | Wang, Xiongfei |
| contents | The BESIII detector on the BEPCII collider collected the world's largest dataset at the peaks of $J/ψ$, $ψ(3686)$ and $ψ(3770)$. The use of polarization and entanglement states in multidimensional angular distribution analysis can provide new probes to the production and decay characteristics of hyperon anti hyperon pairs. In a recent series of studies, significant transverse polarization in hyperon decay has been observed in $J/ψ$, $ψ(3686)$ decaying into the $Λ\barΛ$, $Σ^+\barΣ^{-}$, $Ξ^0\barΞ^0$ and $Ξ^-\barΞ^{+}$ final states. The weak decay parameters of hyperons and antihyperons are also independently determined for the first time. The most accurate testing for direct $CP$ violation has been achieved based on the measured weak decay parameters. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_17486 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Hyperon Physics at BESIII Wang, Xiongfei High Energy Physics - Experiment High Energy Physics - Phenomenology The BESIII detector on the BEPCII collider collected the world's largest dataset at the peaks of $J/ψ$, $ψ(3686)$ and $ψ(3770)$. The use of polarization and entanglement states in multidimensional angular distribution analysis can provide new probes to the production and decay characteristics of hyperon anti hyperon pairs. In a recent series of studies, significant transverse polarization in hyperon decay has been observed in $J/ψ$, $ψ(3686)$ decaying into the $Λ\barΛ$, $Σ^+\barΣ^{-}$, $Ξ^0\barΞ^0$ and $Ξ^-\barΞ^{+}$ final states. The weak decay parameters of hyperons and antihyperons are also independently determined for the first time. The most accurate testing for direct $CP$ violation has been achieved based on the measured weak decay parameters. |
| title | Hyperon Physics at BESIII |
| topic | High Energy Physics - Experiment High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2312.17486 |