{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1998:XHGXF7QOYVCRWBGBQOSOKVZLQD","short_pith_number":"pith:XHGXF7QO","canonical_record":{"source":{"id":"hep-ph/9809337","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1998-09-11T09:52:20Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"73d2eae730018549f3ad4470d32a9858a88d0e613f35615a44923ecf77ea10e7","abstract_canon_sha256":"a6dbb2b72b071b213905e07bb19d40288bb3697e1d0dcc0a569503e8ed2959fa"},"schema_version":"1.0"},"canonical_sha256":"b9cd72fe0ec5451b04c183a4e5572b80c61ba6fa5d0954711795dc18b6a5c33d","source":{"kind":"arxiv","id":"hep-ph/9809337","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"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1998:XHGXF7QOYVCRWBGBQOSOKVZLQD","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/9809337","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1998-09-11T09:52:20Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"73d2eae730018549f3ad4470d32a9858a88d0e613f35615a44923ecf77ea10e7","abstract_canon_sha256":"a6dbb2b72b071b213905e07bb19d40288bb3697e1d0dcc0a569503e8ed2959fa"},"schema_version":"1.0"},"canonical_sha256":"b9cd72fe0ec5451b04c183a4e5572b80c61ba6fa5d0954711795dc18b6a5c33d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:18:24.954621Z","signature_b64":"LdtUFzcD07cLBy9ebeapIUBp2MDSiVNN5zCedSZRaInv7tdMhzwBqH+oPQOZCJ2kpiB+bieGxpsBpQXHSVFQAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9cd72fe0ec5451b04c183a4e5572b80c61ba6fa5d0954711795dc18b6a5c33d","last_reissued_at":"2026-07-04T15:18:24.954070Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:18:24.954070Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/9809337","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:18:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RbjrjDpuCDkGvCnLymdgpo0GyP8i5hKB9chDxR/LjcLaLGj4YDAA77izxE7xpnKUlFP+d5PVMr+eg6ATKPN5DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T23:03:14.512522Z"},"content_sha256":"4799b9b7645ea196c7ae12369c45612fae899ece8566e13dd048e2aaa8942e12","schema_version":"1.0","event_id":"sha256:4799b9b7645ea196c7ae12369c45612fae899ece8566e13dd048e2aaa8942e12"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1998:XHGXF7QOYVCRWBGBQOSOKVZLQD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"N/D Description of Two Meson Amplitudes and Chiral Symmetry","license":"","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"E. Oset, J. A. Oller","submitted_at":"1998-09-11T09:52:20Z","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"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9809337","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/hep-ph/9809337/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:18:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J4fZH3Yc01civwBMUQAdjsCJR/VUnQOMrY7LZgm7nFM0aykj623ssfcWp4jx5SCw/d/mjUAncLHzeQga2h2ABA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T23:03:14.513456Z"},"content_sha256":"dcaecbd69c91a7cf17b20fa1b72e94b564716c26dc92075aace9bd8d7d999f5a","schema_version":"1.0","event_id":"sha256:dcaecbd69c91a7cf17b20fa1b72e94b564716c26dc92075aace9bd8d7d999f5a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XHGXF7QOYVCRWBGBQOSOKVZLQD/bundle.json","state_url":"https://pith.science/pith/XHGXF7QOYVCRWBGBQOSOKVZLQD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XHGXF7QOYVCRWBGBQOSOKVZLQD/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-06T23:03:14Z","links":{"resolver":"https://pith.science/pith/XHGXF7QOYVCRWBGBQOSOKVZLQD","bundle":"https://pith.science/pith/XHGXF7QOYVCRWBGBQOSOKVZLQD/bundle.json","state":"https://pith.science/pith/XHGXF7QOYVCRWBGBQOSOKVZLQD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XHGXF7QOYVCRWBGBQOSOKVZLQD/bundle.json"},"state":{"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"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jyV1Zu+43JgJ+wuvCCuOQQQlr2uNxXDHNgAeE4kKs+ylkINR8xWP6dC30Z7P15ODmSHYkDuP6n5Gx76lGTrACw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T23:03:14.519932Z","bundle_sha256":"117c767d43eda5547b0ccabe599f34ad618788f69ce63612794cbb7b1171f7bc"}}