Journal
PHYSICS LETTERS B
Volume 589, Issue 3-4, Pages 118-124Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2004.03.062
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The role of the nucleon recoil corrections in low-energy meson-nucleus interactions is examined. We demonstrate explicitly when calculations within the static approximation are justified and when the recoil terms need to be kept explicitly in the propagators, depending on whether the S-wave two-nucleon intermediate state is Pauli blocked or not, while the meson is in flight. While the effect is studied in detail for pid scattering only, a large class of other reactions is discussed for which the findings are relevant as well. (C) 2004 Elsevier B.V. All rights reserved.
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