Calculation of the (Δ-h, p-h) Landau parameter gΔ from a many-body Hamiltonian including π and Δ degrees of freedom

Phys. Rev. C 33, 629 – Published 1 February 1986
H. Sagawa, T.-S. H. Lee, and K. Ohta


The (Δ-h, p-h) Landau parameter gΔ has been calculated in the reaction matrix theory using a model Hamiltonian for π, N, and Δ. The main feature of the calculation is that the chosen NN→NΔ transition potential is consistent with the NN scattering data up to the energy region where NN→NΔ→πNN pion production can take place. Our result, gΔ=0.36, agrees qualitatively with a previous calculation based on the meson-exchange potential and simple hard-core correlations.


  • Received 4 June 1985
  • Published in the issue dated February 1986

© 1986 The American Physical Society

Authors & Affiliations

H. Sagawa

  • National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824

T.-S. H. Lee

  • Argonne National Laboratory, Argonne, Illinois 60439

K. Ohta

  • College of General Education, University of Tokyo, Komaba, Tokyo, Japan

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