PaperPanorama

Nuclear Theory·nucl-th

Friday·April 22, 2022

5 papers2 primary·3 cross-listed

  1. 01

    [Submitted on 20 Apr 2022]

    Effect of various particlization scenarios on anisotropic flow and particle production using UrQMD hybrid model

    Sumit Kumar Kundu🇮🇳 · Yoshini Bailung🇮🇳 · Sudhir Pandurang Rode🇷🇺 · Partha Pratim Bhaduri🇮🇳 · Ankhi Roy🇮🇳

    We discuss the effect of various particlization scenarios available in the hybrid ultrarelativistic quantum molecular dynamics (UrQMD) event generator on different observables in non-central ( 5--9 ) Au + Au collisions in the beam energy range 1A-158A GeV. Particlization models switch fluid dynamic description to the transport description using various hypersurface criteria. In addition to particlization models, various equations-of-state (EoS) provided by the UrQMD hybrid model were employed. The observables examined in this paper include the excitation function of anisotropic coefficients such as directed () and elliptic flow (), particle ratios of the species, and the shape of net-proton rapidity spectra at mid-rapidity. The results obtained here can help predict and compare the measurements provided by future experiments at the Facility for Antiproton and Ion Research (FAIR) and the Nuclotron-based Ion Collider fAcility (NICA) once the data becomes available. We also study the most suitable combination of the particlization model and EoS, which best describes the experimental measurements.

    Comments:
    11 pages, 8 figures
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph)
    arXiv:
    2204.09762 [pdf]
    NPA(2023)·1 citation
  2. 02

    [Submitted on 21 Apr 2022]

    The Self-energy of Nucleon for the Pion-nucleon Scattering Parameter

    Susumu Kinpara🇯🇵

    The scattering amplitude of the pion-nucleon elastic scattering is calculated by the lowest-order approximation of the perturbative expansion with the non-perturbative term. The self-energy of nucleon is determined so as to give the scattering parameters of the -wave. It is shown that the scattering process mediated by the -meson plays a decisive role together with the pseudovector pion interaction.

    Comments:
    10 pages
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    2204.09906 [pdf]
    2 citations

Affiliations

first authorsco-authorsvia INSPIRE