{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1999:X7VYGF3GCPVWK4YBA55UMXO4JP","short_pith_number":"pith:X7VYGF3G","schema_version":"1.0","canonical_sha256":"bfeb83176613eb657301077b465ddc4be604084fe21fe9a1bf4da55c1374ee00","source":{"kind":"arxiv","id":"nucl-th/9906042","version":1},"attestation_state":"computed","paper":{"title":"Weak Decay of $\\Lambda$ in Nuclei: Direct Quark Mechanism vs Meson Exchange","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Kenji Sasaki, Makoto Oka, Takashi Inoue","submitted_at":"1999-06-15T07:15:52Z","abstract_excerpt":"Nonmesonic decays of $\\Lambda$ in nuclear medium and light hypernuclei are studied by using the $\\Lambda N \\to NN$ weak transition potential derived from the meson exchange mechanism and the direct quark mechanism. The long range part of the transition potential is described by exchanges of the pseudoscalar mesons ($\\pi$, $K$, $\\eta$), while the vector mesons ($\\rho$, $\\omega$, $K^\\ast$) may be considered as the medium- and short-range part in the meson exchange picture. We propose the direct quark transition potential as the short range part, which is derived from the matrix elements of the $"},"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":"nucl-th/9906042","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"1999-06-15T07:15:52Z","cross_cats_sorted":[],"title_canon_sha256":"29e4f861de5bf4c3bf6a5556527edfa1e221e559f21bf0610acc4110fb97a128","abstract_canon_sha256":"415d038daf42948c3712f89037a3d90d12dd0447a827922b28d2e4d57ce09e68"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:37:06.884759Z","signature_b64":"WyqWEwOz8e9QAD86uh8wktnDf+IwjiPs/tWkpN6tBIJ4Th3sEgNEaOUsl6O7ALiZyOOoDMNsn1vErW2TtksjBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bfeb83176613eb657301077b465ddc4be604084fe21fe9a1bf4da55c1374ee00","last_reissued_at":"2026-05-18T00:37:06.884250Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:37:06.884250Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Weak Decay of $\\Lambda$ in Nuclei: Direct Quark Mechanism vs Meson Exchange","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Kenji Sasaki, Makoto Oka, Takashi Inoue","submitted_at":"1999-06-15T07:15:52Z","abstract_excerpt":"Nonmesonic decays of $\\Lambda$ in nuclear medium and light hypernuclei are studied by using the $\\Lambda N \\to NN$ weak transition potential derived from the meson exchange mechanism and the direct quark mechanism. The long range part of the transition potential is described by exchanges of the pseudoscalar mesons ($\\pi$, $K$, $\\eta$), while the vector mesons ($\\rho$, $\\omega$, $K^\\ast$) may be considered as the medium- and short-range part in the meson exchange picture. We propose the direct quark transition potential as the short range part, which is derived from the matrix elements of the $"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9906042","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":"nucl-th/9906042","created_at":"2026-05-18T00:37:06.884332+00:00"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9906042v1","created_at":"2026-05-18T00:37:06.884332+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9906042","created_at":"2026-05-18T00:37:06.884332+00:00"},{"alias_kind":"pith_short_12","alias_value":"X7VYGF3GCPVW","created_at":"2026-05-18T12:25:49.631198+00:00"},{"alias_kind":"pith_short_16","alias_value":"X7VYGF3GCPVWK4YB","created_at":"2026-05-18T12:25:49.631198+00:00"},{"alias_kind":"pith_short_8","alias_value":"X7VYGF3G","created_at":"2026-05-18T12:25:49.631198+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/X7VYGF3GCPVWK4YBA55UMXO4JP","json":"https://pith.science/pith/X7VYGF3GCPVWK4YBA55UMXO4JP.json","graph_json":"https://pith.science/api/pith-number/X7VYGF3GCPVWK4YBA55UMXO4JP/graph.json","events_json":"https://pith.science/api/pith-number/X7VYGF3GCPVWK4YBA55UMXO4JP/events.json","paper":"https://pith.science/paper/X7VYGF3G"},"agent_actions":{"view_html":"https://pith.science/pith/X7VYGF3GCPVWK4YBA55UMXO4JP","download_json":"https://pith.science/pith/X7VYGF3GCPVWK4YBA55UMXO4JP.json","view_paper":"https://pith.science/paper/X7VYGF3G","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=nucl-th/9906042&json=true","fetch_graph":"https://pith.science/api/pith-number/X7VYGF3GCPVWK4YBA55UMXO4JP/graph.json","fetch_events":"https://pith.science/api/pith-number/X7VYGF3GCPVWK4YBA55UMXO4JP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/X7VYGF3GCPVWK4YBA55UMXO4JP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/X7VYGF3GCPVWK4YBA55UMXO4JP/action/storage_attestation","attest_author":"https://pith.science/pith/X7VYGF3GCPVWK4YBA55UMXO4JP/action/author_attestation","sign_citation":"https://pith.science/pith/X7VYGF3GCPVWK4YBA55UMXO4JP/action/citation_signature","submit_replication":"https://pith.science/pith/X7VYGF3GCPVWK4YBA55UMXO4JP/action/replication_record"}},"created_at":"2026-05-18T00:37:06.884332+00:00","updated_at":"2026-05-18T00:37:06.884332+00:00"}