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On the reactions p + p↦p + Λ + K+ and p + p↦p + Σ0 + K+ near thresholds

  • A.Ya. Berdnikov
  • Ya.A. Berdnikov
  • A.N. Ivanov
  • V.F. Kosmach
  • M.D. Scadron
  • N.I. Troitskaya
  • 23 Downloads

Abstract:

The cross-sections for the reactions of the strange production p + p ↦ p + Λ + K+ and p + p ↦ p + Σ0 + K+ near thresholds of the final states pΛK+ and pΣ0K+ are calculated in the effective Lagrangian approach. Our approach is based on the dominant contribution of the one-pion exchange and strong interaction of the colliding protons in the initial state. The theoretical values of the cross-sections agree reasonably well with the experimental data. The polarization properties of the Λ- and Σ0-hyperons are discussed.

PACS. 11.10.Cd Field theory: Axiomatic approach – 25.10.+s Nuclear reactions involving few-nucleon systems – 25.40.-h Nucleon-induced reactions – 25.40.Cm Elastic proton scattering 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2000

Authors and Affiliations

  • A.Ya. Berdnikov
    • 1
  • Ya.A. Berdnikov
    • 1
  • A.N. Ivanov
    • 1
  • V.F. Kosmach
    • 1
  • M.D. Scadron
    • 1
  • N.I. Troitskaya
    • 1
  1. 1.State Technical University of St. Petersburg, Department of Nuclear Physics,Polytechnicheskaya 29, 195251 St. Petersburg, Russian FederationRU

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