Correlations in multiparticle production

The correlations among the charged particles, produced in interactions o$\stackrel{\mathrm{̇}}{\mathrm{f}}$ 200, 300, and 400 GeV protons and 200 GeV pions with emulsion nuclei are investigated. An asymmetry between the projectile and the target hemispheres is observed. For two-particle distributions, short-range pseudorapidity correlation is found. The correlation between the azimuthal difference $\Delta \phi =|{\phi }_1-{\phi }_2|$ and the pseudorapidity difference $\Delta \eta =|{\eta }_1-{\eta }_2|$ indicates that the short-range rapidity correlation persists over the full $\Delta \phi$ range.