{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:D4XEM2U2JHKUJU3K4N7I6TX4QC","short_pith_number":"pith:D4XEM2U2","canonical_record":{"source":{"id":"hep-ph/0503043","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2005-03-04T11:20:53Z","cross_cats_sorted":[],"title_canon_sha256":"38efd3af75f8bd3edab189c3c4a9ada7847d2760b0ae3bc21d9fc03650d3c031","abstract_canon_sha256":"20eedc03aeccf8f91146864ef5b608fc2fbd7def956f1ee3ea366a5e54ee6591"},"schema_version":"1.0"},"canonical_sha256":"1f2e466a9a49d544d36ae37e8f4efc80ab46f1ff40071870b85fca1bfaaf1e07","source":{"kind":"arxiv","id":"hep-ph/0503043","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0503043","created_at":"2026-07-04T15:17:44Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0503043v1","created_at":"2026-07-04T15:17:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0503043","created_at":"2026-07-04T15:17:44Z"},{"alias_kind":"pith_short_12","alias_value":"D4XEM2U2JHKU","created_at":"2026-07-04T15:17:44Z"},{"alias_kind":"pith_short_16","alias_value":"D4XEM2U2JHKUJU3K","created_at":"2026-07-04T15:17:44Z"},{"alias_kind":"pith_short_8","alias_value":"D4XEM2U2","created_at":"2026-07-04T15:17:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:D4XEM2U2JHKUJU3K4N7I6TX4QC","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/0503043","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2005-03-04T11:20:53Z","cross_cats_sorted":[],"title_canon_sha256":"38efd3af75f8bd3edab189c3c4a9ada7847d2760b0ae3bc21d9fc03650d3c031","abstract_canon_sha256":"20eedc03aeccf8f91146864ef5b608fc2fbd7def956f1ee3ea366a5e54ee6591"},"schema_version":"1.0"},"canonical_sha256":"1f2e466a9a49d544d36ae37e8f4efc80ab46f1ff40071870b85fca1bfaaf1e07","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:17:44.914024Z","signature_b64":"hZTpJWBV2HvRpzvvQtQWUc7uLSCXp4TK4+4VX0qxgHvOtGZ6FddgNfLVWhCUfb8zFktW8rebyfTfkjsKWq0UBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1f2e466a9a49d544d36ae37e8f4efc80ab46f1ff40071870b85fca1bfaaf1e07","last_reissued_at":"2026-07-04T15:17:44.913650Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:17:44.913650Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/0503043","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:17:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uiMYnVNOcVI+Kmd/hsD/ky/STjRWeVz/Vwx+mrP1qjUZuT2Vl9vry42ioSS18HQt5yOsCWMdEo9w/udzX3A4Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T19:20:37.871725Z"},"content_sha256":"1afdbe42fe48138e044b500c1e59821aec695f458024c7f69edf27017a1d2239","schema_version":"1.0","event_id":"sha256:1afdbe42fe48138e044b500c1e59821aec695f458024c7f69edf27017a1d2239"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:D4XEM2U2JHKUJU3K4N7I6TX4QC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evidence for the two pole structure of the Lambda(1405) resonance","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A. Ramos, E. Oset, V.K. Magas","submitted_at":"2005-03-04T11:20:53Z","abstract_excerpt":"The K^- p --> pi^0 pi^0 Sigma^0 reaction is studied within a chiral unitary model. The distribution of pi^0 Sigma^0 states forming the Lambda(1405) shows, in agreement with a recent experiment, a peak at 1420 MeV and a relatively narrow width of Gamma = 38 MeV. The mechanism for the reaction is largely dominated by the emission of a pi^0 prior to the K^- p interaction leading to the Lambda(1405). This ensures the coupling of the Lambda(1405) to the K^- p channel, thus maximizing the contribution of the second state found in chiral unitary theories, which is narrow and of higher energy than the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0503043","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/hep-ph/0503043/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":"2026-07-04T15:17:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RaZvNfr6xpfTJmUp5WFc85Z7y5CZ8O4bywd0Cb0am8NHQIuBVyQfThMl/eQLg2DHKHBQgaRKXtU1xjFzFwI5Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T19:20:37.872329Z"},"content_sha256":"ef2e4ba1ae5a08b937aa4bda691fe8e6c3fd0666dfdbe4761fe783a87e884a37","schema_version":"1.0","event_id":"sha256:ef2e4ba1ae5a08b937aa4bda691fe8e6c3fd0666dfdbe4761fe783a87e884a37"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D4XEM2U2JHKUJU3K4N7I6TX4QC/bundle.json","state_url":"https://pith.science/pith/D4XEM2U2JHKUJU3K4N7I6TX4QC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D4XEM2U2JHKUJU3K4N7I6TX4QC/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":"2026-08-21T19:20:37Z","links":{"resolver":"https://pith.science/pith/D4XEM2U2JHKUJU3K4N7I6TX4QC","bundle":"https://pith.science/pith/D4XEM2U2JHKUJU3K4N7I6TX4QC/bundle.json","state":"https://pith.science/pith/D4XEM2U2JHKUJU3K4N7I6TX4QC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D4XEM2U2JHKUJU3K4N7I6TX4QC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:D4XEM2U2JHKUJU3K4N7I6TX4QC","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":"20eedc03aeccf8f91146864ef5b608fc2fbd7def956f1ee3ea366a5e54ee6591","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2005-03-04T11:20:53Z","title_canon_sha256":"38efd3af75f8bd3edab189c3c4a9ada7847d2760b0ae3bc21d9fc03650d3c031"},"schema_version":"1.0","source":{"id":"hep-ph/0503043","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0503043","created_at":"2026-07-04T15:17:44Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0503043v1","created_at":"2026-07-04T15:17:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0503043","created_at":"2026-07-04T15:17:44Z"},{"alias_kind":"pith_short_12","alias_value":"D4XEM2U2JHKU","created_at":"2026-07-04T15:17:44Z"},{"alias_kind":"pith_short_16","alias_value":"D4XEM2U2JHKUJU3K","created_at":"2026-07-04T15:17:44Z"},{"alias_kind":"pith_short_8","alias_value":"D4XEM2U2","created_at":"2026-07-04T15:17:44Z"}],"graph_snapshots":[{"event_id":"sha256:ef2e4ba1ae5a08b937aa4bda691fe8e6c3fd0666dfdbe4761fe783a87e884a37","target":"graph","created_at":"2026-07-04T15:17:44Z","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/0503043/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The K^- p --> pi^0 pi^0 Sigma^0 reaction is studied within a chiral unitary model. The distribution of pi^0 Sigma^0 states forming the Lambda(1405) shows, in agreement with a recent experiment, a peak at 1420 MeV and a relatively narrow width of Gamma = 38 MeV. The mechanism for the reaction is largely dominated by the emission of a pi^0 prior to the K^- p interaction leading to the Lambda(1405). This ensures the coupling of the Lambda(1405) to the K^- p channel, thus maximizing the contribution of the second state found in chiral unitary theories, which is narrow and of higher energy than the","authors_text":"A. Ramos, E. Oset, V.K. Magas","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"2005-03-04T11:20:53Z","title":"Evidence for the two pole structure of the Lambda(1405) resonance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0503043","kind":"arxiv","version":1},"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":"sha256:1afdbe42fe48138e044b500c1e59821aec695f458024c7f69edf27017a1d2239","target":"record","created_at":"2026-07-04T15:17:44Z","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":"20eedc03aeccf8f91146864ef5b608fc2fbd7def956f1ee3ea366a5e54ee6591","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2005-03-04T11:20:53Z","title_canon_sha256":"38efd3af75f8bd3edab189c3c4a9ada7847d2760b0ae3bc21d9fc03650d3c031"},"schema_version":"1.0","source":{"id":"hep-ph/0503043","kind":"arxiv","version":1}},"canonical_sha256":"1f2e466a9a49d544d36ae37e8f4efc80ab46f1ff40071870b85fca1bfaaf1e07","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1f2e466a9a49d544d36ae37e8f4efc80ab46f1ff40071870b85fca1bfaaf1e07","first_computed_at":"2026-07-04T15:17:44.913650Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:17:44.913650Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hZTpJWBV2HvRpzvvQtQWUc7uLSCXp4TK4+4VX0qxgHvOtGZ6FddgNfLVWhCUfb8zFktW8rebyfTfkjsKWq0UBw==","signature_status":"signed_v1","signed_at":"2026-07-04T15:17:44.914024Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/0503043","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1afdbe42fe48138e044b500c1e59821aec695f458024c7f69edf27017a1d2239","sha256:ef2e4ba1ae5a08b937aa4bda691fe8e6c3fd0666dfdbe4761fe783a87e884a37"],"state_sha256":"0dd826a5105c2a702338dc16d28363a91028ce3ee5ab49c30791cf2f8f9237e4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CTIEgVJeg39Gfo3bcR/avIXpduXmWzztiCS9i7kIip61Ldaj6YOg8BPF6BtlymFSPnfW24FpochYcn3YpvUlCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T19:20:37.876505Z","bundle_sha256":"334703a280246fa9256fa211b130e6d9c571d60dba00a8fdfcdb55e73844de07"}}