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HK: Physik der Hadronen und Kerne

HK 29: Theorie V

HK 29.5: Vortrag

Mittwoch, 21. März 2001, 15:45–16:00, B

Kaon production in pion-nucleon scattering — •Achot M. Gasparian, Johann Haidenbauer, and Josef Speth — FZ Jülich, IKP, 52425 Jülich

The reactions π N → KΛ and π N → KΣ are essential for the understanding of kaon production in nucleon-nucleon scattering [1,2]. We study these processes in a microscopic coupled channel model in the meson exchange framework. We build up on a model of the π N system, presented recently by the Jülich group [3], which already contains explicitly the channels π N, ρ N, η N, π N^*(1520), σ N and π Δ. The interactions in the strangeness channels (KΛ, KΣ) and the transitions potentials into those channels are assumed to be of one-boson-exchange type. The influence of possible contributions from resonance diagrams is discussed.

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[1] S. Sewerin et al., Phys. Rev. Lett. 83, 682 (1999)

[2] A.M. Gasparian et al., Phys. Lett. B 480, 273 (2000)

[3] O. Krehl et al., Phys. Rev. C 62, 02507 (2000)