{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:QTGSGYDFCRXNDTLF4TI3H24KLN","short_pith_number":"pith:QTGSGYDF","schema_version":"1.0","canonical_sha256":"84cd236065146ed1cd65e4d1b3eb8a5b519d64c40835351d64e8576f6039b4a8","source":{"kind":"arxiv","id":"1801.09901","version":1},"attestation_state":"computed","paper":{"title":"Systematic few-body analysis of eta-d, eta-3He and eta-4He interaction at low energies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"A.Fix, O.Kolesnikov","submitted_at":"2018-01-30T09:02:34Z","abstract_excerpt":"The Alt-Grassberger-Sandhas N-body theory is used to study interaction of eta-mesons with d, 3He, and 4He. Separable expansion of the subamplitudes is adopted to convert the integral equations into the quasi-two-body form. The resulting formalism is applied to fit the existing data for low-energy eta production on few-nucleon targets. On the basis of this fitting procedure the scattering lengths a_{eta d}, a_{eta 3He}, a_{eta 4He} as well as the subthreshold behaviour of the elementary eta-N scattering amplitude are obtained."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1801.09901","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-01-30T09:02:34Z","cross_cats_sorted":[],"title_canon_sha256":"b38b8ce77253ab7c31d5c96a7dcbeda99e03a581c545a6c24263aaf9b8a9d04e","abstract_canon_sha256":"a93cd456c40a75b50cc86dad4ce375ecbdcd16bee04b85a5c80eef78b6f240d9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:11.390442Z","signature_b64":"aNFsR4aVBYn7pdkG6a9h1S2ZlnjjLCrUkHDz+fu8xQgk3PGLpIhDMZBaKcExZpJF9l0VCdCMG3pu876n0mjjAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"84cd236065146ed1cd65e4d1b3eb8a5b519d64c40835351d64e8576f6039b4a8","last_reissued_at":"2026-05-18T00:18:11.389789Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:11.389789Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Systematic few-body analysis of eta-d, eta-3He and eta-4He interaction at low energies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"A.Fix, O.Kolesnikov","submitted_at":"2018-01-30T09:02:34Z","abstract_excerpt":"The Alt-Grassberger-Sandhas N-body theory is used to study interaction of eta-mesons with d, 3He, and 4He. Separable expansion of the subamplitudes is adopted to convert the integral equations into the quasi-two-body form. The resulting formalism is applied to fit the existing data for low-energy eta production on few-nucleon targets. On the basis of this fitting procedure the scattering lengths a_{eta d}, a_{eta 3He}, a_{eta 4He} as well as the subthreshold behaviour of the elementary eta-N scattering amplitude are obtained."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.09901","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1801.09901","created_at":"2026-05-18T00:18:11.389883+00:00"},{"alias_kind":"arxiv_version","alias_value":"1801.09901v1","created_at":"2026-05-18T00:18:11.389883+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.09901","created_at":"2026-05-18T00:18:11.389883+00:00"},{"alias_kind":"pith_short_12","alias_value":"QTGSGYDFCRXN","created_at":"2026-05-18T12:32:46.962924+00:00"},{"alias_kind":"pith_short_16","alias_value":"QTGSGYDFCRXNDTLF","created_at":"2026-05-18T12:32:46.962924+00:00"},{"alias_kind":"pith_short_8","alias_value":"QTGSGYDF","created_at":"2026-05-18T12:32:46.962924+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/QTGSGYDFCRXNDTLF4TI3H24KLN","json":"https://pith.science/pith/QTGSGYDFCRXNDTLF4TI3H24KLN.json","graph_json":"https://pith.science/api/pith-number/QTGSGYDFCRXNDTLF4TI3H24KLN/graph.json","events_json":"https://pith.science/api/pith-number/QTGSGYDFCRXNDTLF4TI3H24KLN/events.json","paper":"https://pith.science/paper/QTGSGYDF"},"agent_actions":{"view_html":"https://pith.science/pith/QTGSGYDFCRXNDTLF4TI3H24KLN","download_json":"https://pith.science/pith/QTGSGYDFCRXNDTLF4TI3H24KLN.json","view_paper":"https://pith.science/paper/QTGSGYDF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1801.09901&json=true","fetch_graph":"https://pith.science/api/pith-number/QTGSGYDFCRXNDTLF4TI3H24KLN/graph.json","fetch_events":"https://pith.science/api/pith-number/QTGSGYDFCRXNDTLF4TI3H24KLN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QTGSGYDFCRXNDTLF4TI3H24KLN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QTGSGYDFCRXNDTLF4TI3H24KLN/action/storage_attestation","attest_author":"https://pith.science/pith/QTGSGYDFCRXNDTLF4TI3H24KLN/action/author_attestation","sign_citation":"https://pith.science/pith/QTGSGYDFCRXNDTLF4TI3H24KLN/action/citation_signature","submit_replication":"https://pith.science/pith/QTGSGYDFCRXNDTLF4TI3H24KLN/action/replication_record"}},"created_at":"2026-05-18T00:18:11.389883+00:00","updated_at":"2026-05-18T00:18:11.389883+00:00"}