https://doi.org/10.1140/epja/i2016-16301-1
Regular Article - Experimental Physics
A study of pion fluctuation and correlation in heavy-ion collisions
1
Department of Physics, New Alipore College, L Block, 700053, New Alipore, Kolkata, India
2
Institute of Space Science, Bucharest, Romania
* e-mail: swarna_pratim@yahoo.com
Received:
5
April
2016
Revised:
27
August
2016
Accepted:
8
September
2016
Published online:
30
September
2016
A study of pion correlation and fluctuation has been carried out in terms of normalised factorial cumulant moment of second and third order in 16 O-AgBr, 28 Si-AgBr and 32 S-AgBr interactions at 4.5AGeV/c. Two-particle pion correlations were found to be stronger than the three-particle correlation. Experimental analysis has been compared with the results obtained from the analysis of events simulated by generating random numbers (Monte Carlo Simulation). A comparison of our results with the UrQMD, modified FRITIOF and AMPT models has also been performed. The UrQMD model completely failed to reproduce the experimental results. The modified FRITIOF model also cannot reflect all the features of the experimental outcome. The AMPT model in comparison to the other two models can qualitatively reproduce the experimental results although the strength of the observed correlation in the case of the AMPT model is less than the experimental values.
© SIF, Springer-Verlag Berlin Heidelberg, 2016