Low-energy pion-nucleus potential in the extended tree-level model for the pion-nucleon interaction |
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| Authors: | B. L. Birbrair T. M. Avdeeva Yu. A. Kalashnikov |
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| Affiliation: | 1. Petersburg Nuclear Physics Institute, Gatchina, St.Petersburg, 188350, Russia
2. St.Petersburg State University, St. Petersburg, Russia
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| Abstract: | Starting from the extended tree-level model for the πN interaction [1] (hereafter ETLM) we demonstrated that the observed local pion-nucleus repulsion arises from the reduction of baryon masses in nucleus due to strong scalar nuclear field [2]. This is rather convincing argument in favour of nuclear relativism because such repulsion has no explanation within the traditional nonrelativistic approach to nucleus. |
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