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  • 1
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    Relativistic proton-nucleus scattering and one-boson-exchange models (1993)
    In:  Other Sources
    Details
    Publication Date: 2013-08-29
    Description: Relativistic p-(Ca-40) elastic scattering observables are calculated using four sets of relativistic NN amplitudes obtained from different one-boson-exchange (OBE) models. The first two sets are based upon a relativistic equation in which one particle is on mass shell and the other two sets are obtained from a quasipotential reduction of the Bethe-Salpeter equation. Results at 200, 300, and 500 MeV are presented for these amplitudes. Differences between the predictions of these models provide a study of the uncertainty in constructing Dirac optical potentials from OBE-based NN amplitudes.
    Keywords: ATOMIC AND MOLECULAR PHYSICS
    Type: Hampton Univ., Scattering Calculations and Confining Interactions; 11 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Pseudo-scalar pi N coupling and relativistic proton-nucleus scattering (1988)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Relativistic p-Ca-40 elastic scattering observables are calculated using relativistic NN amplitudes obtained from the solution of a two-body relativistic equation in which one particle is kept on its mass-shell. Results at 200 MeV are presented for two sets of NN amplitudes, one with pure pseudo-vector coupling for the pion and another with a 25 percent admixture of pseudo-scaling coupling. Both give a very good fit to the positive energy on-shell NN data. Differences between the predictions of these two models (which are shown to be due only to the differences in their corresponding negative energy amplitudes) provide a measure of the uncertainty in contructing Dirac optical potentials from NN amplitudes.
    Keywords: ATOMIC AND MOLECULAR PHYSICS
    Type: NASA-TM-101199 , NAS 1.15:101199 , CEBAF-PR-88-010
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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