Study of multiplicity fluctuations in terms of strongly intensive quantity in forward-backward zone

A completely new study of forward-backward multiplicity fluctuation of produced pions in nuclear emulsion detector has been carried out by the method of strongly intensive quantity EFB for 16O-AgBr, 28Si-AgBr and 32S-AgBr interactions at 4.5 AGeV/c. Experimental analysis has been compared using MCRAND events and UrQMD simulated events. UrQMD model could not reproduce the experimental results. Outcome of this analysis supports the presence of dynamical fluctuations in multiparticle production at 4.5 AGeV/c. The results on strongly intensive fluctuation measures at a lower energy show much larger fluctuations in comparison to the higher energy data studied so far. & COPY; 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.

Automated summary

A new study on forward-backward multiplicity fluctuation of pions in a nuclear emulsion detector has been conducted using the method of strongly intensive quantity EFB for 16O-AgBr, 28Si-AgBr, and 32S-AgBr interactions at 4.5 AGeV/c. Experimental analysis was compared to MCRAND events and UrQMD simulated events, with the UrQMD model failing to reproduce the experimental results. The analysis shows the presence of dynamical fluctuations in multiparticle production at 4.5 AGeV/c and larger fluctuations at lower energy compared to higher energy data studied thus far.