Correlations in inelastic collisions of relativistic nuclei with emulsion at (4.1–4.5) A GeV/c

Summary  We present a systematic study and statistically significant results of different types of correlations, in angles, rapidities and rapidity intervals, between various charged secondary particles produced in inelastic interactions of relativistic nuclei with emulsion at (4.1–4.5) A GeV/c. All types of particles are found to be emitted asymmetrically in the azimuthal plane. This asymmetry increases with the decrease of impact parameter. The two-particle correlation function is found to be positive except in the extreme projectile fragmentation region. Particles from different kinematical regions are emitted back-to-back in the azimuthal plane. A multiparticle correlation is observed between created particles as well as target fragments. This assumes production of clusters. These clusters seem to be formed during the decolouring process. Investigations are being carried out to reveal the characteristics of these clusters.