Off-Shell Structures of Nucleon-Nucleon t-matrices and their Influence on Nucleon-Nucleus Elastic Scattering Observables

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dc.creatorWeppner, S. P.
dc.creatorElster, Ch.
dc.creatorHueber, D.
dc.date1997-11-29
dc.date.accessioned2026-07-07T11:11:28Z
dc.date.available2026-07-07T11:11:28Z
dc.descriptionThe sensitivity of nucleon-nucleus elastic scattering observables to the off-shell structure of nucleon-nucleon t-matrices, derived from realistic NN potentials, is investigated within the context of a full-folding model based on the impulse approximation. Our study uses recently developed NN potential models, which describe a subset of the NN data base with a $χ^2$ per datum $\sim$1, which means that the NN t-matrices are essentially on-shell equivalent. We calculate proton-nucleus elastic scattering observables for $^{16}$O, $^{40}$Ca, and $^{208}$Pb between 100 and 200 MeV laboratory energy. We find that the elastic scattering observables are insensitive to off-shell differences of the employed NN t-matrices. A more detailed investigation of the scattering equation and the optical potential as given in a factorized approximation reveals that the elastic scattering observables do not sample the NN t-matrices very far off-shell where they exhibit differences.
dc.description12 pages, LaTeX (RevTex), 11 Figures
dc.identifierhttps://arxiv.org/abs/nucl-th/9712001
dc.identifierhttp://arxiv.org/abs/nucl-th/9712001
dc.identifierPhys.Rev.C57:1378-1385,1998
dc.identifierdoi:10.1103/PhysRevC.57.1378
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/191106
dc.subjectNuclear Theory
dc.titleOff-Shell Structures of Nucleon-Nucleon t-matrices and their Influence on Nucleon-Nucleus Elastic Scattering Observables
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