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ωN final state interactions and ω-meson production from heavy-ion collisions

  • G.I. Lykasov
  • W. Cassing
  • A. Sibirtsev
  • M.V. Rzjanin
Heavy ion physics

Abstract:

We calculate the elastic and inelastic ωN→ωN, →πN, →ρN, →ρπN, →ππN, →σN reactions within a boson exchange approximation where the ωρπ coupling constant and form factor are fixed by the reaction πN→ωN in comparison to the experimental data. We find rather large ωN cross sections at low relative momenta of the ω-meson which leads to a substantial broadening of the ω-meson width in nuclear matter. The implications of the ωN final state interactions are studied for ω production in 12C +12C, 40Ca +40Ca and 58Ni +58Ni reactions at about 2 · A GeV within the HSD transport approach; the drastic changes of the transverse mass spectra relative to a general mT-scaling (for π0 and η mesons) might be controlled experimentally by the TAPS Collaboration.

PACS: 25.75.-q Relativistic heavy-ion collisions – 25.80.-e Meson- and hyperon-induced reactions 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • G.I. Lykasov
    • 1
  • W. Cassing
    • 2
  • A. Sibirtsev
    • 2
  • M.V. Rzjanin
    • 1
  1. 1.Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, RussiaRU
  2. 2.Institut für Theoretische Physik, Heinrich-Buff-Ring 16, D-35392 Giessen, GermanyDE

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