On production of η mesons in pp collisions close to threshold

  • V. Baru
  • J. Haidenbauer
  • C. Hanhart
  • A. Kudryavtsev
  • P. Moskal
  • J. Speth
Heavy ion physics

Abstract.

The near threshold behaviour of the reaction cross section for ppppη, recently measured in experiments at COSY and SATURNE, is analyzed. The interaction in the pp as well as in the ηp final states is taken into account. The suppression of the total cross section for this process at excess energies Q < 3 MeV observed in these experiments is interpreted as an evidence for a strong repulsive ηp interaction.

PACS:13.75.-n Hadron-induced low- and intermediate-energy reactions and scattering (energy ≤ GeV) – 25.10.+s Nuclear reactions involving few-nucleon systems – 25.40.-h Nucleon-induced reactions 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • V. Baru
    • 1
  • J. Haidenbauer
    • 1
  • C. Hanhart
    • 3
  • A. Kudryavtsev
    • 2
  • P. Moskal
    • 1
  • J. Speth
    • 1
  1. 1.Institut für Kernphysik, Forschungszentrum Jülich GmbH, 52425 Jülich, GermanyDE
  2. 2.Institute of Theoretical and Experimental Physics, 117258, B. Cheremushkinskaya 25, Moscow, RussiaRU
  3. 3.Department of Physics and INT, University of Washington, Seattle, WA 98195-1560, USAUS
  4. 4.Institute of Physics, Jagellonian University, Reymonta 4, 30-059 Cracow, PolandPL

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