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

Qiu-Yan Zhang, Peng-Cheng Hong, Wei-Min Song

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…