https://doi.org/10.1140/epja/s10050-023-01107-3
Regular Article - Theoretical Physics
Dynamical 
fluctuation in Au + Au interactions at 
30 A GeV using transport models
1
Department of Physics, Ananda Chandra College, 735101, Jalpaiguri, India
2
Department of Physics, North Bengal University, 734013, Siliguri, India
Received:
17
April
2023
Accepted:
4
August
2023
Published online:
9
September
2023
We study the dynamical fluctuation 
in the particle yield ratio produced in Au + Au interactions at the laboratory energy 
A GeV using the ultra-relativistic quantum molecular dynamics (UrQMD) and a multi-phase transport (AMPT) models. Additionally, we investigate some single particle properties of 
and 
and bulk properties of the matter created in the interactions under consideration. The single particle properties like the centrality dependence of normalized particle yield and mean transverse momentum measured from the models are found to differ from the corresponding experimental values. The dynamical fluctuation in , denoted by 
, are positive valued, while the fluctuation measured for the identified particle pairs, like 
, 
, etc. are negative valued at all centralities. Correlations between the oppositely charged particle pairs are found to be larger than that between the same charged particle pairs. Also we study the effect of hadronic rescattering in the dynamical fluctuations by using both the UrQMD and AMPT models.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
