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Azimuthal correlation and collective behavior in nucleus-nucleus collisions

Abstract

Various flow effects of nuclear and hadronic origin are investigated in nucleus-nucleus collisions. Nuclear emulsion data collected from 84Kr + Ag/Br interaction at an incident energy of 1.52 GeV per nucleon and from 28Si + Ag/Br interaction at an incident energy of 14.5 GeV per nucleon are used in the investigation. The transverse momentum distribution and the flow angle analysis show that collective behavior, like a bounce-off effect of the projectile spectators and a sidesplash effect of the target spectators, are present in our event samples. From an azimuthal angle analysis of the data we also see a direct flow of the projectile fragments and of the produced charged particles. On the other hand, for both data samples the target fragments exhibit a reverse flow, while the projectile fragments exhibit an elliptic flow. Relevant flow parameters are measured.

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Correspondence to A. Mukhopadhyay.

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Mali, P., Mukhopadhyay, A., Sarkar, S. et al. Azimuthal correlation and collective behavior in nucleus-nucleus collisions. Phys. Atom. Nuclei 78, 258–267 (2015). https://doi.org/10.1134/S1063778815020210

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  • DOI: https://doi.org/10.1134/S1063778815020210

Keywords

  • Transverse Momentum
  • Atomic Nucleus
  • Azimuthal Angle
  • Incident Energy
  • Collective Behavior