{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:XHGXF7QOYVCRWBGBQOSOKVZLQD","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"a6dbb2b72b071b213905e07bb19d40288bb3697e1d0dcc0a569503e8ed2959fa","cross_cats_sorted":["nucl-th"],"license":"","primary_cat":"hep-ph","submitted_at":"1998-09-11T09:52:20Z","title_canon_sha256":"73d2eae730018549f3ad4470d32a9858a88d0e613f35615a44923ecf77ea10e7"},"schema_version":"1.0","source":{"id":"hep-ph/9809337","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9809337","created_at":"2026-07-04T15:18:24Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9809337v2","created_at":"2026-07-04T15:18:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9809337","created_at":"2026-07-04T15:18:24Z"},{"alias_kind":"pith_short_12","alias_value":"XHGXF7QOYVCR","created_at":"2026-07-04T15:18:24Z"},{"alias_kind":"pith_short_16","alias_value":"XHGXF7QOYVCRWBGB","created_at":"2026-07-04T15:18:24Z"},{"alias_kind":"pith_short_8","alias_value":"XHGXF7QO","created_at":"2026-07-04T15:18:24Z"}],"graph_snapshots":[{"event_id":"sha256:dcaecbd69c91a7cf17b20fa1b72e94b564716c26dc92075aace9bd8d7d999f5a","target":"graph","created_at":"2026-07-04T15:18:24Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/hep-ph/9809337/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The most general structure of an elastic partial wave amplitude when the unphysical cuts are neglected is deduced in terms of the N/D method. This result is then matched to lowest order, ${\\mathcal{O}}(p^2)$, Chiral Perturbation Theory($\\chi$PT) and to the exchange (consistent with chiral symmetry) of resonances in the s-channel. The extension of the method to coupled channels is also given. Making use of the former formalism, the $\\pi\\pi$ and $K\\pi$(I=1/2) P-wave scattering amplitudes are described without free parameters when taking into account relations coming from the 1/$N_c$ expansion an","authors_text":"E. Oset, J. A. Oller","cross_cats":["nucl-th"],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1998-09-11T09:52:20Z","title":"N/D Description of Two Meson Amplitudes and Chiral Symmetry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9809337","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:4799b9b7645ea196c7ae12369c45612fae899ece8566e13dd048e2aaa8942e12","target":"record","created_at":"2026-07-04T15:18:24Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"a6dbb2b72b071b213905e07bb19d40288bb3697e1d0dcc0a569503e8ed2959fa","cross_cats_sorted":["nucl-th"],"license":"","primary_cat":"hep-ph","submitted_at":"1998-09-11T09:52:20Z","title_canon_sha256":"73d2eae730018549f3ad4470d32a9858a88d0e613f35615a44923ecf77ea10e7"},"schema_version":"1.0","source":{"id":"hep-ph/9809337","kind":"arxiv","version":2}},"canonical_sha256":"b9cd72fe0ec5451b04c183a4e5572b80c61ba6fa5d0954711795dc18b6a5c33d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9cd72fe0ec5451b04c183a4e5572b80c61ba6fa5d0954711795dc18b6a5c33d","first_computed_at":"2026-07-04T15:18:24.954070Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:18:24.954070Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LdtUFzcD07cLBy9ebeapIUBp2MDSiVNN5zCedSZRaInv7tdMhzwBqH+oPQOZCJ2kpiB+bieGxpsBpQXHSVFQAQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:18:24.954621Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9809337","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4799b9b7645ea196c7ae12369c45612fae899ece8566e13dd048e2aaa8942e12","sha256:dcaecbd69c91a7cf17b20fa1b72e94b564716c26dc92075aace9bd8d7d999f5a"],"state_sha256":"ce1f70f06c75ef12d65a9208c4f42cc0ca2722ab12de144e2089aceb657ec72d"}