论文标题
besiii的超子物理学
Hyperon Physics at BESIII
论文作者
论文摘要
BESIII实验利用了自旋极化和纠缠，以进一步了解Hyperon-Antihyperon Pairs的生产和衰减特性，这是对其前所未有的数据集的一系列分析，以$ J/ψ$和$ψ'$ resonancans进行了前所未有的数据集。这导致在$ j/ψ$或$ψ'$中的衰减中观察到$λ\barλ$，$σ\barς$，$ξ\ bar配给$λ\barΩ$，以及$ω\barΩ$。由于非零的极化，可以首次独立确定超子和抗蛇龙最常见的HADRONE弱衰变的衰减参数。相互比较会产生直接测试的精确测试，$ΔS= 1 $ cp-violation补充Kaon衰变的测量值。
Spin polarization and entanglement are utilized by the BESIII experiment to learn more about the production and decay properties of hyperon-antihyperon pairs in a series of recent analyses of its unprecedented datasets at the $J/ψ$ and $ψ'$ resonances. This has lead to the observation of significant transverse polarisation in decays of $J/ψ$ or $ψ'$ into $Λ\barΛ$, $Σ\barΣ$, $Ξ\barΞ$, and $Ω\barΩ$. Because of the non-zero polarization, the decay parameters for the most common hadronic weak decays of both hyperons and antihyperons could be determined independently for the first time. Comparing these to each other yields precise tests of direct, $ΔS = 1$ CP-violation that complement measurements of kaon decays.
