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Abstract <p>In this work the Abrasion-Ablation Monte Carlo for Colliders model with and without MST-clustering was employed to characterise the momentum distribution of produced spectator fragments. The simulation results suggest that pre-equilibrium fragmentation with accounting for Coulomb interaction between charged spectator fragments lead to an increase of their mean transverse momentum <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\({{p}_{T}}\)</EquationSource> <!--PhysPNLt2570111Vasyagina-m1--> </InlineEquation>, bringing the calculations closer to experimental data. The pseudorapidity distributions of H, He, Li spectator fragments from 3.26<InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(A\)</EquationSource> <!--PhysPNLt2570111Vasyagina-m2--> </InlineEquation> GeV <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(^{{124}}\)</EquationSource> <!--PhysPNLt2570111Vasyagina-m3--> </InlineEquation>Xe + CsI collisions at the BM@N were calculated.</p>

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Simulation of the Momentum Distributions of the Spectator Fragments in 124Xe + CsI Collisions at the BM@N with Accounting for Pre-Equilibrium Clusterization

  • 期刊论文

  • 发表日期：

    2025年10月3日

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  • E. Vasyagina,
  • S. Savenkov,
  • A. Svetlichnyi

摘要

Abstract

In this work the Abrasion-Ablation Monte Carlo for Colliders model with and without MST-clustering was employed to characterise the momentum distribution of produced spectator fragments. The simulation results suggest that pre-equilibrium fragmentation with accounting for Coulomb interaction between charged spectator fragments lead to an increase of their mean transverse momentum \({{p}_{T}}\) , bringing the calculations closer to experimental data. The pseudorapidity distributions of H, He, Li spectator fragments from 3.26 \(A\) GeV \(^{{124}}\) Xe + CsI collisions at the BM@N were calculated.