{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:3REAJ4PC6NTCPDHCJWM45TX334","short_pith_number":"pith:3REAJ4PC","canonical_record":{"source":{"id":"1411.7884","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-11-28T14:43:15Z","cross_cats_sorted":["hep-ex","nucl-ex","nucl-th"],"title_canon_sha256":"dda4418958acf6a1715e89e696308304b023f149b3830c43377e806bd4d97e2f","abstract_canon_sha256":"398257605d28a27c26a978e8444f0d160ac541b3e2290e83c224dddf116e1795"},"schema_version":"1.0"},"canonical_sha256":"dc4804f1e2f366278ce24d99cecefbdf2b822e6384cdfe8f2186f5eb6655c2c1","source":{"kind":"arxiv","id":"1411.7884","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.7884","created_at":"2026-05-18T01:41:25Z"},{"alias_kind":"arxiv_version","alias_value":"1411.7884v2","created_at":"2026-05-18T01:41:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.7884","created_at":"2026-05-18T01:41:25Z"},{"alias_kind":"pith_short_12","alias_value":"3REAJ4PC6NTC","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"3REAJ4PC6NTCPDHC","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"3REAJ4PC","created_at":"2026-05-18T12:28:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:3REAJ4PC6NTCPDHCJWM45TX334","target":"record","payload":{"canonical_record":{"source":{"id":"1411.7884","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-11-28T14:43:15Z","cross_cats_sorted":["hep-ex","nucl-ex","nucl-th"],"title_canon_sha256":"dda4418958acf6a1715e89e696308304b023f149b3830c43377e806bd4d97e2f","abstract_canon_sha256":"398257605d28a27c26a978e8444f0d160ac541b3e2290e83c224dddf116e1795"},"schema_version":"1.0"},"canonical_sha256":"dc4804f1e2f366278ce24d99cecefbdf2b822e6384cdfe8f2186f5eb6655c2c1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:25.041469Z","signature_b64":"Ia49zTzz0F/oxGZQ08bU5J0xt/0eWQLmIim05Nkk3kfOIYfLjs3S0jjwIcic4ItYYgD9ZmehxCA9kaFpXXbaBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dc4804f1e2f366278ce24d99cecefbdf2b822e6384cdfe8f2186f5eb6655c2c1","last_reissued_at":"2026-05-18T01:41:25.040829Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:25.040829Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1411.7884","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":"2026-05-18T01:41:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fUkx/5iQeVOINDpA2JmjnLqog94NciwNh/Cw3kIzt9z0Q4MyzlLmPNvff/H/0Gk0lmo5SN7CaskyMcZJVHWIBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T21:12:15.534876Z"},"content_sha256":"1ec5d98067d264d855f71ea1ce99d358cb8e6581235bc10f5e2ccf1f49963fae","schema_version":"1.0","event_id":"sha256:1ec5d98067d264d855f71ea1ce99d358cb8e6581235bc10f5e2ccf1f49963fae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:3REAJ4PC6NTCPDHCJWM45TX334","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraints on the chiral unitary $\\bar KN$ amplitude from $\\pi\\Sigma K^+$ photoproduction data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"Maxim Mai, Ulf-G. Mei{\\ss}ner","submitted_at":"2014-11-28T14:43:15Z","abstract_excerpt":"A chiral unitary approach for antikaon-nucleon scattering in on-shell factorization is studied. We find multiple sets of parameters for which the model describes all existing hadronic data similarly well. We confirm the two-pole structure of the $\\Lambda (1405)$. The narrow $\\Lambda(1405)$ pole appears at comparable positions in the complex energy plane, whereas the location of the broad pole suffers from a large uncertainty. In the second step, we use a simple model for photoproduction of $K^+\\pi\\Sigma$ off the proton and confront it with the experimental data from the CLAS collaboration. It "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.7884","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":""},"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":"2026-05-18T01:41:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+9k6nV3d3d+e+6ZEnHWVOahDjj6nARp/xsVpm9x9HpId0fAAetWzwmhQHLSNhtg69u2cpywR6XNwn5ES3Sy6BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T21:12:15.535235Z"},"content_sha256":"231b12bc5e4396283a08c9ea036e3ed0a82a946b8888aa3c24a089e6d67852c5","schema_version":"1.0","event_id":"sha256:231b12bc5e4396283a08c9ea036e3ed0a82a946b8888aa3c24a089e6d67852c5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3REAJ4PC6NTCPDHCJWM45TX334/bundle.json","state_url":"https://pith.science/pith/3REAJ4PC6NTCPDHCJWM45TX334/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3REAJ4PC6NTCPDHCJWM45TX334/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":"2026-06-01T21:12:15Z","links":{"resolver":"https://pith.science/pith/3REAJ4PC6NTCPDHCJWM45TX334","bundle":"https://pith.science/pith/3REAJ4PC6NTCPDHCJWM45TX334/bundle.json","state":"https://pith.science/pith/3REAJ4PC6NTCPDHCJWM45TX334/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3REAJ4PC6NTCPDHCJWM45TX334/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:3REAJ4PC6NTCPDHCJWM45TX334","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":"398257605d28a27c26a978e8444f0d160ac541b3e2290e83c224dddf116e1795","cross_cats_sorted":["hep-ex","nucl-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-11-28T14:43:15Z","title_canon_sha256":"dda4418958acf6a1715e89e696308304b023f149b3830c43377e806bd4d97e2f"},"schema_version":"1.0","source":{"id":"1411.7884","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.7884","created_at":"2026-05-18T01:41:25Z"},{"alias_kind":"arxiv_version","alias_value":"1411.7884v2","created_at":"2026-05-18T01:41:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.7884","created_at":"2026-05-18T01:41:25Z"},{"alias_kind":"pith_short_12","alias_value":"3REAJ4PC6NTC","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"3REAJ4PC6NTCPDHC","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"3REAJ4PC","created_at":"2026-05-18T12:28:11Z"}],"graph_snapshots":[{"event_id":"sha256:231b12bc5e4396283a08c9ea036e3ed0a82a946b8888aa3c24a089e6d67852c5","target":"graph","created_at":"2026-05-18T01:41:25Z","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"},"paper":{"abstract_excerpt":"A chiral unitary approach for antikaon-nucleon scattering in on-shell factorization is studied. We find multiple sets of parameters for which the model describes all existing hadronic data similarly well. We confirm the two-pole structure of the $\\Lambda (1405)$. The narrow $\\Lambda(1405)$ pole appears at comparable positions in the complex energy plane, whereas the location of the broad pole suffers from a large uncertainty. In the second step, we use a simple model for photoproduction of $K^+\\pi\\Sigma$ off the proton and confront it with the experimental data from the CLAS collaboration. It ","authors_text":"Maxim Mai, Ulf-G. Mei{\\ss}ner","cross_cats":["hep-ex","nucl-ex","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-11-28T14:43:15Z","title":"Constraints on the chiral unitary $\\bar KN$ amplitude from $\\pi\\Sigma K^+$ photoproduction data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.7884","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":"sha256:1ec5d98067d264d855f71ea1ce99d358cb8e6581235bc10f5e2ccf1f49963fae","target":"record","created_at":"2026-05-18T01:41:25Z","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":"398257605d28a27c26a978e8444f0d160ac541b3e2290e83c224dddf116e1795","cross_cats_sorted":["hep-ex","nucl-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-11-28T14:43:15Z","title_canon_sha256":"dda4418958acf6a1715e89e696308304b023f149b3830c43377e806bd4d97e2f"},"schema_version":"1.0","source":{"id":"1411.7884","kind":"arxiv","version":2}},"canonical_sha256":"dc4804f1e2f366278ce24d99cecefbdf2b822e6384cdfe8f2186f5eb6655c2c1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dc4804f1e2f366278ce24d99cecefbdf2b822e6384cdfe8f2186f5eb6655c2c1","first_computed_at":"2026-05-18T01:41:25.040829Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:25.040829Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ia49zTzz0F/oxGZQ08bU5J0xt/0eWQLmIim05Nkk3kfOIYfLjs3S0jjwIcic4ItYYgD9ZmehxCA9kaFpXXbaBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:25.041469Z","signed_message":"canonical_sha256_bytes"},"source_id":"1411.7884","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1ec5d98067d264d855f71ea1ce99d358cb8e6581235bc10f5e2ccf1f49963fae","sha256:231b12bc5e4396283a08c9ea036e3ed0a82a946b8888aa3c24a089e6d67852c5"],"state_sha256":"6de4422b1288f328b5615db019058881544e25c02541ba83f52ce38015bef3c6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k/UYl/tZisUG6UrsWE3Sspcnu2g57nVJwJoA/U2DurSVvxEHw1i+MZYQpExMonvZV6Btnq/surusU5v/SYtnAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T21:12:15.537251Z","bundle_sha256":"d1da44ecd571d6218a89b5387510b795e955e14dc8a31d8c4cff4e3c91f0b6f0"}}