{"paper":{"title":"Chirally motivated separable potential model for $\\eta N$ amplitudes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"A. Cieply, J. Smejkal","submitted_at":"2013-08-20T13:18:33Z","abstract_excerpt":"We analyze the $\\eta N$ interaction using a coupled channel separable potential model that implements the chiral symmetry. The model predicts an $\\eta N$ stattering length $\\Re a_{\\eta N} \\approx 0.7$ fm and in-medium subthreshold attraction most likely sufficient to generate $\\eta$-nuclear bound states. The energy dependence of the $\\eta N$ amplitude and pole content of the model are discussed. An idea of the same origin of the baryon resonances $N^{\\star}(1535)$ and $N^{\\star}(1650)$ is presented."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.4300","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}