Speaker
Jingxu Zhang
Description
With large datasets of $J/\psi$ and $\psi(3686)$ resonances collected at BESIII through electron-positron annihilation, highly precise polarization measurements and studies on the properties of entangled hyperon-antihyperon pairs are available. The BESIII collaboration has recently presented a series of analyses on the transverse polarization measurements in the processes of $J/\psi$ and $\psi(3686)$ decaying into $\Lambda\bar\Lambda$, $\Sigma\bar{\Sigma}$, and $\Xi\bar\Xi$. The weak decay parameters are independently determined in both hyperon mode and antihyperon mode, guided by the non-zero polarization. A direct CP conservation test can then be conducted with the hyperon-antihyperon decay parameters.
Primary author
Jingxu Zhang
