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K + production in proton and deuteron induced reactions at subthreshold energies

  • Hadron Physics
  • Published:
Zeitschrift für Physik A Hadrons and Nuclei

Abstract

The production ofK + mesons in proton-nucleus and deuteron-nucleus collisions is analyzed with respect to one-step nucleon-nucleon (NN → N ΛK +),Δ- nucleon (ΔN → N Λ K+) and two-step pion-nucleon (πN → K + Λ) production channels on the basis of experimental ground state momentum distributions and free on-shell production processes. Whereas forK + production in proton-nucleus reactions the secondary channelπN clearly dominates at subthreshold energies, meson and nucleon induced channels are of similar magnitude in deuteron-nucleus reactions. Contrary to nucleus-nucleus collisions theΔ induced reaction channels are found to be of minor importance. The experimental differentiation of the underlying microscopic reaction channels appears possible via differential proton —K + coincidence measurements as shown in detail by the microscopic simulations including proton rescattering.

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Authors and Affiliations

  1. Institut für Theoretische Physik der Universität, Heinrich-Buff-Ring 16, D-35392, Giessen, Germany

    W. Cassing

  2. Institute of Physics, Jagellonian University, PL-30059, Cracow, Poland

    T. Demski, L. Jarczyk, B. Kamys, Z. Rudy & A. Strzalkowski

  3. Experimentelle Kernphysik II, KfA Jülich, D-52425, Jülich, Germany

    O. W. B. Schult

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  1. W. Cassing
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  2. T. Demski
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  3. L. Jarczyk
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  4. B. Kamys
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  5. Z. Rudy
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  6. O. W. B. Schult
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  7. A. Strzalkowski
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Supported by BMFT, GSI Darmstadt, Forschungszentrum Jülich and the Polish Ministry of Education under grant No PB-2593

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Cassing, W., Demski, T., Jarczyk, L. et al. K + production in proton and deuteron induced reactions at subthreshold energies. Z. Physik A - Hadrons and Nuclei 349, 77–86 (1994). https://doi.org/10.1007/BF01296336

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  • DOI: https://doi.org/10.1007/BF01296336

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