Microscopic study of the Δ-nucleus potential from a many-body Hamiltonian for π, N, and Δ

Phys. Rev. C 25, 3043 – Published 1 June 1982
T. -S. H. Lee and K. Ohta

Abstract

The strength of the Δ-nucleus potential is calculated from the many-body Hamiltonian for π, N, and Δ constructed by Betz and Lee. The results are compared to the empirical values of the Δ-hole doorway model. It is found that the calculated strength of the central potential reproduces the empirical one to a large extent. However, the calculated spin-orbit potential is much smaller than that of of the Δ-hole model. It is also shown that the pion absorption through the N Δ S wave only accounts for about half of the total absorption. The sums of other N Δ partial waves are found to be equally important.

NUCLEAR REACTIONS A model of interactions between π, N, and Δ in nuclear matter. Calculation of the Δ-nucleus potential.

DOI: http://dx.doi.org/10.1103/PhysRevC.25.3043

  • Received 23 October 1981
  • Published in the issue dated June 1982

© 1982 The American Physical Society

Authors & Affiliations

T. -S. H. Lee*

  • Argonne National Laboratory, Argonne, Illinois 60439 and Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

K. Ohta

  • Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

  • *Permanent address.
  • On leave of absence from University of Tokyo, Tokyo, Japan.

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