{"paper":{"title":"Are there eta-Helium bound states?","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"A.M. Green, J.A. Niskanen, S. Wycech","submitted_at":"1995-02-08T13:28:43Z","abstract_excerpt":"Using multiple scattering theory the scattering lengths of $\\eta$ mesons on helium nuclei are calculated and checked against final state $\\eta$ interactions from the $pd \\rightarrow \\eta ^3$He and $dd \\rightarrow \\eta ^4$He reactions. The existence of an $\\eta^4$He quasibound state is indicated."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9502022","kind":"arxiv","version":1},"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"}