Observation of a polarization structure in inelastic $^{40}$Ca$(p,p')$X reaction at 1 GeV

The polarization of the secondary protons in the inelastic $(p,p')$ reaction on the $^{40}$Ca nucleus at the initial proton energy 1 GeV was measured in a wide range of the scattered proton momenta at a laboratory angle $\Theta=21^\circ$. The final protons from the reaction were detected using the magnetic spectrometer equipped with multiwire-proportional chambers polarimeter. A structure of the polarization data, related probably to scattering off the nucleon correlations in the nucleus, was observed.