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Off-shell effects in nucleon-deuteron polarization observables

  • Nuclei
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Zeitschrift für Physik A Atoms and Nuclei

Abstract

A separable representation of theS-wave Paris potential and a phase-shift equivalent Yamaguchi-type potential significantly differing in their off-shell behaviours are used to calculate second-order polarization observables of elastic nucleon-deuteron scattering atE D=10 and 20MeV. Off-shell effects are found that stem from differences in the nuclear interaction in the inner regionr≲1.2 fm. Adding approximate Coulomb-distortion contributions to the purely nuclear Faddeev amplitudes proton-deuteron predictions are obtained. Coulomb effects are not found to be negligible. Comparison with experimental data, in particular, the spin-correlation parameterC y,y of the reaction\({}^1\vec H(\vec d,d)^1 H\) forE D=10MeV vector-polarized deuterons and the spin-transfer coefficientsK y′y ,K x′x andK x′z for\({}^2H(\vec p,\vec p)^2 H\) atE p=10MeV, prefer the interaction model that contains an intermediate-range repulsion.

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Authors and Affiliations

  1. Institut für Theoretische Physik, Karl-Franzens-Universität Graz, Graz, Austria

    H. Zankel & W. Plessas

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  1. H. Zankel
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  2. W. Plessas
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Additional information

We are grateful to J. Haidenbauer for valuable contributions and to H. Zingl for clarifying discussions. The computations were performed at the Rechenzentrum Graz. This work was supported by Fonds zur Förderung der wissenschaftlichen Forschung in Österreich, project 4220.

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Zankel, H., Plessas, W. Off-shell effects in nucleon-deuteron polarization observables. Z Physik A 317, 45–54 (1984). https://doi.org/10.1007/BF01420447

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  • DOI: https://doi.org/10.1007/BF01420447

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