Fig. 3: Polarization in and spin correlations of the \({e}^{+}{e}^{-}\to J/\psi \to \bar{\Lambda }{\Sigma }^{0} \sim (\Lambda {\bar{\Sigma}}^{0})\) reaction.
From: Extracting the femtometer structure of strange baryons using the vacuum polarization effect

The points with error bars, blue solid dot for \(J/\psi \to {\bar{\Lambda }}{\Sigma }^{0}\) and red open double diamond for \(J/\psi \to \Lambda {\bar{\Sigma }}^{0}\), are extracted in each \(\cos {\theta }_{{\Sigma }^{0}}\)(\(\cos {\theta }_{{\bar{\Sigma }}^{0}}\)) bin, and the blue solid curves denote the global expected dependence on \(\cos {\theta }_{{\Sigma }^{0}}\)(\(\cos {\theta }_{{\bar{\Sigma }}^{0}}\) for the red dotted curve).