The influence of hadronic rescatterings on the net-baryon number fluctuations
arxiv(2024)
摘要
Fluctuations of conserved charges, such as the net-baryon number
fluctuations, are influenced by different dynamical evolution processes. In
this paper, we investigate the influence of hadronic rescatterings on different
orders of cumulants of the net-baryon number distribution. At the start of
hadronic rescatterings, we introduce net-baryon number distributions
reconstructed based on net-baryon cumulants of different orders obtained from
computation in functional renormalization group (FRG), where the distributions
were constructed using the maximum entropy method. This way we introduce the
critical fluctuations of Quantum Chromodynamics (QCD) into the AMPT model.
Firstly, we find that hadronic rescatterings have distinct effects on cumulant
ratios of different orders for the net-baryon number. Secondly, we observe that
the effect of hadronic rescatterings is more significant for critical
fluctuations than dynamical fluctuations, because the two-, three- and
four-particle correlation functions due to critical fluctuations are weakened
more significantly by hadronic rescatterings.
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