• Sanjib Kumar Manna

      Articles written in Pramana – Journal of Physics

    • Ring and jet study on the azimuthal substructure of pions at CERN SPS energy

      Prabir Kumar Haldar Sanjib Kumar Manna Prosenjit Saha Dipak Ghosh

      More Details Abstract Fulltext PDF

      We have presented an investigation on the ring- and jet-like azimuthal angle sub-structures in the emission of secondary charged hadrons coming from 32S–Ag/Br interactions at 200 A GeV/c. Nuclear photographic emulsion technique has been employed to collect the experimental data. The presence of such substructures, their average behaviour, their size, and their position of occurrence have been examined. The experimental results have also been compared with the results simulated by Monte-Carlo method. The analysis strongly indicates the presence of ring- and jet-like structures in the experimental distributions of particles beyond statistical noise. The experimental results are in good agreement with I M Dremin idea, that the phenomenon is similar to the emission of Cherenkov electromagnetic radiation.

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