Nucleon-nucleon optical model for energies up to 3 GeV

A. Funk, H. V. von Geramb, and K. A. Amos
Phys. Rev. C 64, 054003 – Published 12 October 2001
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Abstract

Several nucleon-nucleon potentials, Paris, Nijmegen, Argonne, and those derived by quantum inversion, which describe the NN interaction for TLab<~300MeV, are extended in their range of application as NN optical models. Extensions are made in r space using complex separable potentials definable with a wide range of form factor options including those of boundary condition models. We use the latest phase shift analysis SP00 (FA00, WI00) of Arndt et al. from 300 MeV up to 3 GeV to determine these extensions. The imaginary parts of the optical model interactions account for loss of flux into direct or resonant production processes. The optical potential approach is of particular value as it permits one to visualize fusion, and subsequent fission, of nucleons when TLab>2GeV. We do so by calculating the scattering wave functions to specify the energy and radial dependences of flux losses and of probability distributions. Furthermore, half off the energy shell t matrices are presented as they are readily deduced with this approach. Such t matrices are required for studies of few- and many-body nuclear reactions.

  • Received 27 April 2001

DOI:https://doi.org/10.1103/PhysRevC.64.054003

©2001 American Physical Society

Authors & Affiliations

A. Funk1,*, H. V. von Geramb1,2,†, and K. A. Amos2,‡

  • 1Theoretische Kernphysik, Universität Hamburg, Luruper Chaussee 149, D-22761 Hamburg, Germany
  • 2School of Physics, University of Melbourne, Victoria 3010, Australia

  • *Email address: funk@physnet2.uni-hamburg.de
  • Email address: geramb@uni-hamburg.de
  • Email address: amos@higgs.ph.unimelb.edu.au

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Issue

Vol. 64, Iss. 5 — November 2001

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