Extended Data Fig. 1: 3D and 2D invariant mass distributions of pπ− pairs, paired with \(\bar{{\boldsymbol{p}}}{{\boldsymbol{\pi }}}^{{\boldsymbol{+}}}\) pairs, are shown in the top-left and top-right panels, respectively.
From: Measuring spin correlation between quarks during QCD confinement

The projections of the multidimensional distributions to pπ− and \(\bar{p}{{\rm{\pi }}}^{+}\) are shown in the bottom-left and bottom-right panels, respectively.