Two-particle correlations between secondary protons in the π-12C interactions at 40 GeV/c

Two-particle coprelations between secondary protons arising from π-12C-interactions at 40 GeV/c are studied. Different effects are observed of interaction of protons in the final state at small differences of their momenta Δp=|p1 vector-p2 vector|<0.100 GeV/c. For protons smaller than 200 GeV related to the carbon nucleus destruction, a destructive correlation, which is due to the Coulomb repulsion between the partic--les and their identity, is observed. For protons with momenta larger than (200-300) GeV/c, produced in multiple inelastic collisions of the incident pion with the nucleons of the target nucleus, a constructuve correlation, connected with the nuclear attraction between the rotons, is observed