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Systematic study of multiparticle production in nucleus–nucleus interactions at 14.6 A GeV

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Abstract

An experimental analysis of 855 events induced by 14.6 A GeV 28Si in nuclear emulsion is presented. Mean multiplicities of charged secondary particles produced in the nuclear interactions are studied and compared with the results from the other experiments for the same projectile at 3.7 A GeV as well as data for proton at similar energy (14 GeV). An analysis of pseudorapidity densities of target fragments (black and grey particles) is also performed. The behaviour of the KNO scaling law of the multiplicity distribution for shower particles has been examined. In order to accumulate knowledge about the intermittent behaviour of shower particles, the scaled factorial moments (SFMs) are computed in η-space and ϕ-space for a set of data in the 28Si–AgBr events. Furthermore, validity of limiting fragmentation of shower particles produced in central collision events induced by 28Si-emulsion interactions has been tested. A crude estimation for the energy density of the nuclear matter formed in the central collision events at our energy has been examined.

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Acknowledgements

AK is grateful to the Council of Scientific and Industrial Research (CSIR), New Delhi, India for providing a research grant. The authors would like to thank Prof. Amitabha Mukhopadhyay for fruitful discussion.

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Authors and Affiliations

  1. High Energy Physics Laboratory, Department of Physics, Banaras Hindu University, Varanasi, 221 005, India

    ASHWINI KUMAR & B K SINGH

  2. Department of Mathematics and Computer Science, State University of New York at Fredonia, New York, 14063, USA

    G SINGH

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  1. ASHWINI KUMAR
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  2. G SINGH
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Correspondence to ASHWINI KUMAR.

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KUMAR, A., SINGH, G. & SINGH, B.K. Systematic study of multiparticle production in nucleus–nucleus interactions at 14.6 A GeV. Pramana - J Phys 81, 103–115 (2013). https://doi.org/10.1007/s12043-013-0552-1

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