Figure from reference [27] showing the distribution of the γ’s Δϕ relative azimuthal angle after their first Compton scattering. The angle is measured in the plane perpendicular to the γ’s line of flight, and is relative to an axis in this plane. The experimental setup is described in [27], its segmentation allows measuring the γ’s interaction points and hence to reconstruct the γ’s direction after their first scattering. The unpolarized model (green) and polarized one without entanglement (red) curves are shown, together with the new model developed (blue) which is in very good accordance with the data.