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- W2030730314 abstract "In order to examine the validity of the impulse approximation for pion-nucleus scattering in the 33-resonance energy region, we consider pion-scattering from a “nucleus” which consists of a single nucleon bound in a harmonic oscillator potential. A separable πN interaction is assumed. The oscillator parameter is chosen such that the nuclear sizes are fitted for 4 He ∼ 16 O. The binding effect is found to result in a downward shift of the resonance energy (by about 20 MeV), and an increase (by 50 ∼ 70%) of the total cross section near the resonance. The angular distribution is also strongly modified. In connection with the binding effect, the importance of a careful treatment of nucleon recoil is emphasized. It is pointed out that the closure approximation which is often used to sum over intermediate nuclear states leads to very misleading results. The effect of the Pauli principle is also examined by excluding some intermediate states." @default.
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- W2030730314 date "1977-01-01" @default.
- W2030730314 modified "2023-09-26" @default.
- W2030730314 title "Pion scattering from a bound nucleon at medium energies" @default.
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- W2030730314 doi "https://doi.org/10.1016/0003-4916(77)90266-4" @default.
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