Wei-Min Song

Beam-polarization-enabled witness of four-dimensional entanglement in $\Omega^-\bar\Omega^+$ pairs

We study the entanglement structure of $\Omega^-\bar{\Omega}^+$ pairs produced in $e^+e^-\to\psi(3686)$, focusing on whether the entanglement requires the full four-dimensional spin space of each spin-$3/2$ baryon. Beam polarization controls the parent-state populations and coherence, thereby modifying helicity interfe...