An analysis of pion-nucleus scattering lengths within an α-cluster model |
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| Authors: | J Hüfner L Tauscher C Wilkin |
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| Institution: | 1. Institut für Theoretische Physik der Universität, Germany;2. Max-Planck-Institut für Kernphysik, Heidelberg, Germany;3. Kernforschungszentrum, Karlsruhe, Germany;4. CERN, Geneva, Switzerland |
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| Abstract: | Pion-nucleus s-wave scattering lengths are calculated from a multiple scattering series in terms of the π-α scattering length. Agreement on the level of 10–20% with the values obtained from mesic-atom data is achieved for all nuclei with A ≦ 20. This lends weight to the speculation that pion absorption on light nuclei takes place primarily on α-particle substructures. |
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