2025/08/18 by Zarina Banoo, Ramni Gupta, Banoo, Zarina +12
Physics and Astronomy · #Bin #Charged particle #Dark Matter and Cosmic Phenomena #Factorial #Fractal #Fractal dimension #High-Energy Particle Collisions Research #Intermittency #Moment (physics) #Multiplicity (mathematics) #Particle physics theoretical and experimental studies #Phase space #Scaling #hep-ex #hep-ph #nucl-th
paper · pdf · doi:10.48550/arxiv.2508.12796
openalex publication_date 2025/08/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
The spatial configurations of particles produced in the kinematic phase space during a heavy-ion collision reflect the characteristics of the system created in the collision. The scaling behaviour of the multiplicity fluctuations is studied for the charged particles generated in Xe--Xe collisions at √s_\rmNN~=~5.44~TeV using the String Melting (SM) mode of the AMPT (A Multi-Phase Transport) model. The scaling behaviour of the normalized factorial moments (Fq) gives significant information about the dynamics of the system under study. A linear power-law growth of the Fq with the increasing phase space resolution, termed as intermittency, is investigated. The anomalous fractal dimension Dq is determined, which is linked to the self-similarity and fractal nature of the particle emission spectra, whose dependence on the order of the moment (q) is characterised by the intermittency index (φq). Relating q^\rmth order Normalised Factorial Moment (NFM) with F2, the scaling exponent (ν) is determined that quantifies the dynamics of the system created by these collisions and is analyzed for its dependence on the transverse momentum bin width (ΔpT). Results presented may be interpreted as model predictions and baseline expectations.