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Abstract <p>The study of the momentum spectra of charged particles allows one to obtain information about the thermodynamic characteristics of system arising from the collision of heavy ions. This research can improve our understanding of their interactions and dynamics in various physical processes. The aim of this work is to study the momentum spectra of pions, kaons, and protons in Ar <InlineEquation ID="IEq9"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11450_2025_3650_Article_IEq9.gif" Format="GIF" Height="13" Rendition="HTML" Resolution="72" Type="Linedraw" Width="14" /> </InlineMediaObject> <EquationSource Format="TEX">\(+\)</EquationSource> <!--NuclPhys2560135Karpova-m9--> </InlineEquation> Ar and <InlineEquation ID="IEq10"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11450_2025_3650_Article_IEq10.gif" Format="GIF" Height="15" Rendition="HTML" Resolution="72" Type="Linedraw" Width="42" /> </InlineMediaObject> <EquationSource Format="TEX">\({p}+{p}\)</EquationSource> <!--NuclPhys2560135Karpova-m10--> </InlineEquation> at energy <InlineEquation ID="IEq11"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11450_2025_3650_Article_IEq11.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="88" /> </InlineMediaObject> <EquationSource Format="TEX">\(\sqrt{s_{NN}}=11\)</EquationSource> <!--NuclPhys2560135Karpova-m11--> </InlineEquation> and 27 GeV, respectively, using the UrQMD (Ultrarelativistic Quantum Molecular Dynamics) model for the SPD experiment at NICA. The spectra are presented as a function of transverse momentum. The extracted kinetic temperature for the protons, pions and kaons was obtained using hydrodynamic Blast-Wave parametrization based on Boltzmann statistics. Physics implications will be discussed.</p>

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Charged Pion, Kaon and Proton Spectra in Ar \({+}\) Ar Collisions at \({\sqrt{s_{NN}}=11}\) GeV and \({{p}+{p}}\) Collisions at \({\sqrt{s_{NN}}=27}\) GeV in the UrQMD Model

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • Yulia Karpova,
  • Matvey Kondratev,
  • Anna Kraeva,
  • Alexey Povarov

摘要

Abstract

The study of the momentum spectra of charged particles allows one to obtain information about the thermodynamic characteristics of system arising from the collision of heavy ions. This research can improve our understanding of their interactions and dynamics in various physical processes. The aim of this work is to study the momentum spectra of pions, kaons, and protons in Ar \(+\) Ar and \({p}+{p}\) at energy \(\sqrt{s_{NN}}=11\) and 27 GeV, respectively, using the UrQMD (Ultrarelativistic Quantum Molecular Dynamics) model for the SPD experiment at NICA. The spectra are presented as a function of transverse momentum. The extracted kinetic temperature for the protons, pions and kaons was obtained using hydrodynamic Blast-Wave parametrization based on Boltzmann statistics. Physics implications will be discussed.