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Nuclear Theory·nucl-th

Monday·October 21, 2024

7 papers—2 primary·5 cross-listed

All7Primary2Cross-lists5
  1. 01

    [Submitted on 17 Oct 2024]

    Theoretical description of proton-deuteron interactions using exact two-body dynamic of femtoscopic correlation method

    Wioleta Rzęsa · Maria Stefaniak · Scott Pratt

    Modeling proton-deuteron interactions is particularly challenging. Due the deuteron's large size, the interaction can extend over several femtometers. The degree to which it can be modeled as a two-body problem might also be questioned. One way to study these interactions is through femtoscopic correlation measurements of particle pairs, extracting information using available theoretical models. In this work, we examine two approaches for describing proton-deuteron correlations: the Lednicky-Lyuboshits formalism and full numerical solutions of the Schrodinger equation. Our results show that the differences between these methods are significant. Furthermore, we demonstrate that incorporating higher-order partial waves-particularly p-wave -is the essential for accurately capturing the dynamics of proton-deuteron interactions and the full potential of the strong force.

    Comments:
    7 pages, 4 figures
    Subjects:
    Nuclear Theory (nucl-th); Nuclear Experiment (nucl-ex)
    arXiv:
    2410.13983 [pdf]
    PRC(2025)·13 citations
  2. 02

    [Submitted on 18 Oct 2024]

    Structure of nuclei in dileptons production in proton-nucleus scattering

    Sergei P. Maydanyuk (1,2,3)🇨🇳 · Gyorgy Wolf (2) ((1) Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China, (2) Wigner Research Centre for Physics, Budapest, Hungary, (3) Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine)🇭🇺

    We investigate production of electron-positron pairs (dileptons) in the scattering of protons off nuclei. Focus is directed on clarifying role of nuclear interactions which make basis in mechanisms of scattering process and structure of nuclei. For that, we constructed a new model of production of dileptons, where scattering of nuclei and their structure are described on the basis of quantum mechanics. Cross sections of dilepton production are calculated in the scattering of protons on \isotope[9]{B} at energy of proton beam of 2.1~GeV. Tendency of the calculated full spectrum is in good agreement with experimental data of DLS Collaboration. Contribution of incoherent processes has a leading role in production of dileptons in comparison with coherent one. In our model calculated cross section of dileptons is sensitive to nuclear part of potential of interactions between proton and nucleus in scattering. Influence of structure of nucleus on calculations of cross sections of production of dileptons is essential. This result provides save basis for new opportunity to extract new information about structure of nuclei, nuclear part of potential from experimental data of dileptons at studied energies of proton beam.

    Comments:
    10 pages, 3 captured figures. arXiv admin note: text overlap with arXiv:2312.07372
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph)
    arXiv:
    2410.14162 [pdf]
    0 citations

Affiliations

first authorsco-authorsvia INSPIRE