{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:VUM3B3XM2LEVNBGWNSYEPOEFNF","short_pith_number":"pith:VUM3B3XM","canonical_record":{"source":{"id":"1610.08978","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-10-27T20:00:01Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"0a1527b98bb347d20a42d3e82cf2905843c524769bbefd718a6b7c68d179cdff","abstract_canon_sha256":"263f366d917cb966d40ba521c00f64da33f981236108dcca9b9b1634170b73aa"},"schema_version":"1.0"},"canonical_sha256":"ad19b0eeecd2c95684d66cb047b885695f413e61f46780f530c72579fa318f56","source":{"kind":"arxiv","id":"1610.08978","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.08978","created_at":"2026-05-18T00:45:25Z"},{"alias_kind":"arxiv_version","alias_value":"1610.08978v2","created_at":"2026-05-18T00:45:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.08978","created_at":"2026-05-18T00:45:25Z"},{"alias_kind":"pith_short_12","alias_value":"VUM3B3XM2LEV","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"VUM3B3XM2LEVNBGW","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"VUM3B3XM","created_at":"2026-05-18T12:30:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:VUM3B3XM2LEVNBGWNSYEPOEFNF","target":"record","payload":{"canonical_record":{"source":{"id":"1610.08978","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-10-27T20:00:01Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"0a1527b98bb347d20a42d3e82cf2905843c524769bbefd718a6b7c68d179cdff","abstract_canon_sha256":"263f366d917cb966d40ba521c00f64da33f981236108dcca9b9b1634170b73aa"},"schema_version":"1.0"},"canonical_sha256":"ad19b0eeecd2c95684d66cb047b885695f413e61f46780f530c72579fa318f56","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:45:25.902072Z","signature_b64":"EVgHs8uHC4is+Nn7d533x8dtZQPqP1Ss8IY3sDg6x5veE+B5E4uFwp7Ui0ffFNkwWHSihvN61EbENYJiKPDQCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad19b0eeecd2c95684d66cb047b885695f413e61f46780f530c72579fa318f56","last_reissued_at":"2026-05-18T00:45:25.901309Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:45:25.901309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1610.08978","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":"2026-05-18T00:45:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C8egOMaNKjXksPUqZDAV0IkdiRI9O249HUI9im0NlULqC7/flhKLxeJqZC56A7UJjC4R6W/KGh+maxma5gt1DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:01:50.188964Z"},"content_sha256":"bfc673071ea3940b26927bf113ed8228e5b33e47d07861ee45aa03d97a6d3097","schema_version":"1.0","event_id":"sha256:bfc673071ea3940b26927bf113ed8228e5b33e47d07861ee45aa03d97a6d3097"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:VUM3B3XM2LEVNBGWNSYEPOEFNF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reconciling threshold and subthreshold expansions for pion-nucleon scattering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"nucl-th","authors_text":"B. Kubis, D. Siemens, E. Epelbaum, H. Krebs, J. Ruiz de Elvira, M. Hoferichter, U.-G. Mei{\\ss}ner","submitted_at":"2016-10-27T20:00:01Z","abstract_excerpt":"Heavy-baryon chiral perturbation theory (ChPT) at one loop fails in relating the pion-nucleon amplitude in the physical region and for subthreshold kinematics due to loop effects enhanced by large low-energy constants. Studying the chiral convergence of threshold and subthreshold parameters up to fourth order in the small-scale expansion, we address the question to what extent this tension can be mitigated by including the $\\Delta(1232)$ as an explicit degree of freedom and/or using a covariant formulation of baryon ChPT. We find that the inclusion of the $\\Delta$ indeed reduces the low-energy"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.08978","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":"2026-05-18T00:45:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kmh3VSjvZR5GRHeakSmXTBvpaqFf5F2ln2ommog8MlJlteEHJ7pCY1VIcZ5rpuwzS9wIUjk4wHmzHoN9fL5/CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:01:50.189653Z"},"content_sha256":"60898d0b910498f384b4a0eb10b761aaab3be46ee410e924c24c5feb9f5bd896","schema_version":"1.0","event_id":"sha256:60898d0b910498f384b4a0eb10b761aaab3be46ee410e924c24c5feb9f5bd896"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VUM3B3XM2LEVNBGWNSYEPOEFNF/bundle.json","state_url":"https://pith.science/pith/VUM3B3XM2LEVNBGWNSYEPOEFNF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VUM3B3XM2LEVNBGWNSYEPOEFNF/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":"2026-05-25T22:01:50Z","links":{"resolver":"https://pith.science/pith/VUM3B3XM2LEVNBGWNSYEPOEFNF","bundle":"https://pith.science/pith/VUM3B3XM2LEVNBGWNSYEPOEFNF/bundle.json","state":"https://pith.science/pith/VUM3B3XM2LEVNBGWNSYEPOEFNF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VUM3B3XM2LEVNBGWNSYEPOEFNF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:VUM3B3XM2LEVNBGWNSYEPOEFNF","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":"263f366d917cb966d40ba521c00f64da33f981236108dcca9b9b1634170b73aa","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-10-27T20:00:01Z","title_canon_sha256":"0a1527b98bb347d20a42d3e82cf2905843c524769bbefd718a6b7c68d179cdff"},"schema_version":"1.0","source":{"id":"1610.08978","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.08978","created_at":"2026-05-18T00:45:25Z"},{"alias_kind":"arxiv_version","alias_value":"1610.08978v2","created_at":"2026-05-18T00:45:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.08978","created_at":"2026-05-18T00:45:25Z"},{"alias_kind":"pith_short_12","alias_value":"VUM3B3XM2LEV","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"VUM3B3XM2LEVNBGW","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"VUM3B3XM","created_at":"2026-05-18T12:30:48Z"}],"graph_snapshots":[{"event_id":"sha256:60898d0b910498f384b4a0eb10b761aaab3be46ee410e924c24c5feb9f5bd896","target":"graph","created_at":"2026-05-18T00:45:25Z","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":"Heavy-baryon chiral perturbation theory (ChPT) at one loop fails in relating the pion-nucleon amplitude in the physical region and for subthreshold kinematics due to loop effects enhanced by large low-energy constants. Studying the chiral convergence of threshold and subthreshold parameters up to fourth order in the small-scale expansion, we address the question to what extent this tension can be mitigated by including the $\\Delta(1232)$ as an explicit degree of freedom and/or using a covariant formulation of baryon ChPT. We find that the inclusion of the $\\Delta$ indeed reduces the low-energy","authors_text":"B. Kubis, D. Siemens, E. Epelbaum, H. Krebs, J. Ruiz de Elvira, M. Hoferichter, U.-G. Mei{\\ss}ner","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-10-27T20:00:01Z","title":"Reconciling threshold and subthreshold expansions for pion-nucleon scattering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.08978","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:bfc673071ea3940b26927bf113ed8228e5b33e47d07861ee45aa03d97a6d3097","target":"record","created_at":"2026-05-18T00:45:25Z","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":"263f366d917cb966d40ba521c00f64da33f981236108dcca9b9b1634170b73aa","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-10-27T20:00:01Z","title_canon_sha256":"0a1527b98bb347d20a42d3e82cf2905843c524769bbefd718a6b7c68d179cdff"},"schema_version":"1.0","source":{"id":"1610.08978","kind":"arxiv","version":2}},"canonical_sha256":"ad19b0eeecd2c95684d66cb047b885695f413e61f46780f530c72579fa318f56","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ad19b0eeecd2c95684d66cb047b885695f413e61f46780f530c72579fa318f56","first_computed_at":"2026-05-18T00:45:25.901309Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:45:25.901309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EVgHs8uHC4is+Nn7d533x8dtZQPqP1Ss8IY3sDg6x5veE+B5E4uFwp7Ui0ffFNkwWHSihvN61EbENYJiKPDQCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:45:25.902072Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.08978","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bfc673071ea3940b26927bf113ed8228e5b33e47d07861ee45aa03d97a6d3097","sha256:60898d0b910498f384b4a0eb10b761aaab3be46ee410e924c24c5feb9f5bd896"],"state_sha256":"6e3b01792eacec9a9f4e822f38bd9176f33ed17ef588189ba362cf121f2e336c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FeDc0YsYDx5C9WBc/hakvOQ66WeLeI9g8Zv+WzevkQ1sQRlAb2/aCSGvD95nei3daskUNOIPjKblqIZBdfoNCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T22:01:50.193472Z","bundle_sha256":"0650cafff85bf6f994b622d15553d4daec77713955c4bddec9d6d7a1387b67d1"}}