{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:DEPS52TRFS3C7QEFE4QAQRAUVY","short_pith_number":"pith:DEPS52TR","canonical_record":{"source":{"id":"0909.4390","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-09-24T09:25:51Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"720811353c03602952ec75a02812297b6f20b75d49f2b1de519ef115bf92258c","abstract_canon_sha256":"bc1dd1425f47c0a88ba3b5f68fd27047fb9edbf2ced8f5c9aae3be2ae2122aa9"},"schema_version":"1.0"},"canonical_sha256":"191f2eea712cb62fc0852720084414ae1c8aa55cbb25acfc6574ab6e7f531119","source":{"kind":"arxiv","id":"0909.4390","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.4390","created_at":"2026-05-18T04:08:04Z"},{"alias_kind":"arxiv_version","alias_value":"0909.4390v2","created_at":"2026-05-18T04:08:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.4390","created_at":"2026-05-18T04:08:04Z"},{"alias_kind":"pith_short_12","alias_value":"DEPS52TRFS3C","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"DEPS52TRFS3C7QEF","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"DEPS52TR","created_at":"2026-05-18T12:25:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:DEPS52TRFS3C7QEFE4QAQRAUVY","target":"record","payload":{"canonical_record":{"source":{"id":"0909.4390","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-09-24T09:25:51Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"720811353c03602952ec75a02812297b6f20b75d49f2b1de519ef115bf92258c","abstract_canon_sha256":"bc1dd1425f47c0a88ba3b5f68fd27047fb9edbf2ced8f5c9aae3be2ae2122aa9"},"schema_version":"1.0"},"canonical_sha256":"191f2eea712cb62fc0852720084414ae1c8aa55cbb25acfc6574ab6e7f531119","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:08:04.068158Z","signature_b64":"2saTaxYzS9IcYEydILCjduNxhncCJf2RRKQHqBs53Xsi5bh2SAnJ3PDs/ysGYaz1pYUGvOqQK6aT1GgUC+CfDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"191f2eea712cb62fc0852720084414ae1c8aa55cbb25acfc6574ab6e7f531119","last_reissued_at":"2026-05-18T04:08:04.067685Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:08:04.067685Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0909.4390","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":"2026-05-18T04:08:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GnNKvIOb735hxMGyDRkwok81fCJEaiFmYBdF96I72+Xe43r5H2j97YJaSM6whG0y6on0MsyEM2YlTAB+X4gWBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T12:41:40.346979Z"},"content_sha256":"a8e06a60c3817237fe9bbd0a7e74f1e4ab818dce714c8c7cdaa16765749a6606","schema_version":"1.0","event_id":"sha256:a8e06a60c3817237fe9bbd0a7e74f1e4ab818dce714c8c7cdaa16765749a6606"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:DEPS52TRFS3C7QEFE4QAQRAUVY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Isospin violation in low-energy pion-nucleon scattering revisited","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Bastian Kubis, Martin Hoferichter, Ulf-G. Mei{\\ss}ner","submitted_at":"2009-09-24T09:25:51Z","abstract_excerpt":"We calculate isospin breaking in pion-nucleon scattering in the threshold region in the framework of covariant baryon chiral perturbation theory. All effects due to quark mass differences as well as real and virtual photons are consistently included. As an application, we discuss the energy dependence of the triangle relation that connects elastic scattering on the proton pi+- p --> pi+- p with the charge exchange reaction pi- p --> pi0 n."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.4390","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":"2026-05-18T04:08:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"noHzqPwiGdH9bOHKjQt1a+D+eaVy9Z55Smg9FJf+YXpWh9CLnYhyteb6XUMTeAnMgXowKF2DPtKTL51PqGeYCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T12:41:40.347784Z"},"content_sha256":"303aa85a245ec8901a2bf90860dde21a90ea3d074d14e345140cea898e166429","schema_version":"1.0","event_id":"sha256:303aa85a245ec8901a2bf90860dde21a90ea3d074d14e345140cea898e166429"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DEPS52TRFS3C7QEFE4QAQRAUVY/bundle.json","state_url":"https://pith.science/pith/DEPS52TRFS3C7QEFE4QAQRAUVY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DEPS52TRFS3C7QEFE4QAQRAUVY/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":"2026-08-12T12:41:40Z","links":{"resolver":"https://pith.science/pith/DEPS52TRFS3C7QEFE4QAQRAUVY","bundle":"https://pith.science/pith/DEPS52TRFS3C7QEFE4QAQRAUVY/bundle.json","state":"https://pith.science/pith/DEPS52TRFS3C7QEFE4QAQRAUVY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DEPS52TRFS3C7QEFE4QAQRAUVY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:DEPS52TRFS3C7QEFE4QAQRAUVY","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":"bc1dd1425f47c0a88ba3b5f68fd27047fb9edbf2ced8f5c9aae3be2ae2122aa9","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-09-24T09:25:51Z","title_canon_sha256":"720811353c03602952ec75a02812297b6f20b75d49f2b1de519ef115bf92258c"},"schema_version":"1.0","source":{"id":"0909.4390","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.4390","created_at":"2026-05-18T04:08:04Z"},{"alias_kind":"arxiv_version","alias_value":"0909.4390v2","created_at":"2026-05-18T04:08:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.4390","created_at":"2026-05-18T04:08:04Z"},{"alias_kind":"pith_short_12","alias_value":"DEPS52TRFS3C","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"DEPS52TRFS3C7QEF","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"DEPS52TR","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:303aa85a245ec8901a2bf90860dde21a90ea3d074d14e345140cea898e166429","target":"graph","created_at":"2026-05-18T04:08:04Z","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":"We calculate isospin breaking in pion-nucleon scattering in the threshold region in the framework of covariant baryon chiral perturbation theory. All effects due to quark mass differences as well as real and virtual photons are consistently included. As an application, we discuss the energy dependence of the triangle relation that connects elastic scattering on the proton pi+- p --> pi+- p with the charge exchange reaction pi- p --> pi0 n.","authors_text":"Bastian Kubis, Martin Hoferichter, Ulf-G. Mei{\\ss}ner","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-09-24T09:25:51Z","title":"Isospin violation in low-energy pion-nucleon scattering revisited"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.4390","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:a8e06a60c3817237fe9bbd0a7e74f1e4ab818dce714c8c7cdaa16765749a6606","target":"record","created_at":"2026-05-18T04:08:04Z","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":"bc1dd1425f47c0a88ba3b5f68fd27047fb9edbf2ced8f5c9aae3be2ae2122aa9","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-09-24T09:25:51Z","title_canon_sha256":"720811353c03602952ec75a02812297b6f20b75d49f2b1de519ef115bf92258c"},"schema_version":"1.0","source":{"id":"0909.4390","kind":"arxiv","version":2}},"canonical_sha256":"191f2eea712cb62fc0852720084414ae1c8aa55cbb25acfc6574ab6e7f531119","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"191f2eea712cb62fc0852720084414ae1c8aa55cbb25acfc6574ab6e7f531119","first_computed_at":"2026-05-18T04:08:04.067685Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:08:04.067685Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2saTaxYzS9IcYEydILCjduNxhncCJf2RRKQHqBs53Xsi5bh2SAnJ3PDs/ysGYaz1pYUGvOqQK6aT1GgUC+CfDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:08:04.068158Z","signed_message":"canonical_sha256_bytes"},"source_id":"0909.4390","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a8e06a60c3817237fe9bbd0a7e74f1e4ab818dce714c8c7cdaa16765749a6606","sha256:303aa85a245ec8901a2bf90860dde21a90ea3d074d14e345140cea898e166429"],"state_sha256":"21d852aad7e0c5e0fe931ea2ae676ac213667daa16f928ea7cd070f396dd6b6b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F+Rc89CXpx7amTcDAkS8Me16tjJDZB/SV8yk0m5OEBD2mnkV1XjsdKhXWctbaMe7AhoUFOZbQVlDBkzbdHipDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T12:41:40.359039Z","bundle_sha256":"a0b11a5612d6fb41b2e825c43b5e0f37c3f6253a8f3beb27e0fdcdd40b21d03f"}}