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- W2078380000 abstract "We present a unitary, Lorentz-invariant three-body calculation of pion-deuteron elastic scattering, based upon the idea of quasiparticle-dominated two-body interactions. We make detailed comparisons of these results with those of a conventional fixed-scatterer approach and find that the fixed-nucleon calculation does not adequately reproduce the three-body results, demonstrating the importance of properly treating the three-body kinematics (i.e., of including nucleon recoil and isobar propagation). The multiple scattering expansion converges much more rapidly in the three-body approach than in the fixed-scatterer calculation. Intermediate nucleon-nucleon interactions play an important role, giving contributions to the scattering amplitude of the same order as those given by pion multiple scattering; these effects are especially significant for back-angle scattering. Finally, we compare our results with the available experimental data for the $ensuremath{pi}d$ total and integrated elastic cross sections and obtain good agreement. Nucleon spin is neglected in all calculations.NUCLEAR REACTIONS $^{2}mathrm{H}(ensuremath{pi},ensuremath{pi})$, $E=80ensuremath{-}240$ MeV; relativistic three-body calculation of elastic scattering." @default.
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- W2078380000 title "Relativistic three-body calculation of<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>π</mml:mi><mml:mi /><mml:mi>d</mml:mi></mml:math>scattering" @default.
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- W2078380000 doi "https://doi.org/10.1103/physrevc.13.286" @default.
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