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arXiv 2302.02623hep-ex
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BESIII实验中的光超子物理

Light hyperon physics at the BESIII experiment

V. Batozskaya

摘要:

自2008年以来,在北京(中国)正负电子对撞机BEPCII上进行的BESIII实验一直在成功运行,并在τ质量区域收集了大量数据样本,包括世界上最大的$J/ψ$和$ψ'$共振数据样本。最近在BESIII上对超子极化的观测为检验CP破坏打开了一个新的窗口,因为它允许同时产生和检测超子和反超子对两体弱衰变。CP对称性测试可以在$J/ψ\toΛ\barΛ$、$J/ψ,ψ'\toΣ^+\barΣ^-$和$J/ψ\toΞ^-\barΞ^+$等过程中执行。对于$Ξ^-\toΛπ^-$衰减,可以执行三个独立的CP测试并确定强相位差和弱相位差。

英文摘要:

The BESIII experiment at the electron-positron collider BEPCII in Beijing (China) is successfully operating since 2008 and has collected large data samples in the tau-mass region, including the world's largest data samples at the $J/ψ$ and $ψ'$ resonances. The recent observations of hyperon polarizations at BESIII opens a new window for testing CP violation, as it allows for simultaneous production and detection of hyperon and anti-hyperon pair two-body weak decays. The CP-symmetry tests can be performed in processes like e.g. $J/ψ\toΛ\barΛ$, $J/ψ,ψ'\toΣ^+\barΣ^-$ and $J/ψ\toΞ^-\barΞ^+$. For the $Ξ^-\toΛπ^-$ decay it is possible to perform three independent CP tests and determine the strong phase and weak phase difference.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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