{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:NXBF4ZDDDGNWKJVP3JBP2W3DLK","short_pith_number":"pith:NXBF4ZDD","canonical_record":{"source":{"id":"hep-ph/0103263","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2001-03-24T02:36:17Z","cross_cats_sorted":[],"title_canon_sha256":"b99ec1c446caba7eba4b00543dc2d2b52303c1f362167645458d421b2f301aa2","abstract_canon_sha256":"d88f28000580879ec29c9899e56834546f77081ea6c565964c1f0dbe35eb919a"},"schema_version":"1.0"},"canonical_sha256":"6dc25e6463199b6526afda42fd5b635aa33ed1487167896672bb4fa302ac461d","source":{"kind":"arxiv","id":"hep-ph/0103263","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0103263","created_at":"2026-07-04T17:20:59Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0103263v2","created_at":"2026-07-04T17:20:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0103263","created_at":"2026-07-04T17:20:59Z"},{"alias_kind":"pith_short_12","alias_value":"NXBF4ZDDDGNW","created_at":"2026-07-04T17:20:59Z"},{"alias_kind":"pith_short_16","alias_value":"NXBF4ZDDDGNWKJVP","created_at":"2026-07-04T17:20:59Z"},{"alias_kind":"pith_short_8","alias_value":"NXBF4ZDD","created_at":"2026-07-04T17:20:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:NXBF4ZDDDGNWKJVP3JBP2W3DLK","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/0103263","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2001-03-24T02:36:17Z","cross_cats_sorted":[],"title_canon_sha256":"b99ec1c446caba7eba4b00543dc2d2b52303c1f362167645458d421b2f301aa2","abstract_canon_sha256":"d88f28000580879ec29c9899e56834546f77081ea6c565964c1f0dbe35eb919a"},"schema_version":"1.0"},"canonical_sha256":"6dc25e6463199b6526afda42fd5b635aa33ed1487167896672bb4fa302ac461d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:20:59.368340Z","signature_b64":"4pv4EoM95mr2w7dtkf4gadozrJBmRqnxhrhLjAtLQvXB04RTW67b4LoTlonxxdBBpT97hqqqpZFSJQxAliLqBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6dc25e6463199b6526afda42fd5b635aa33ed1487167896672bb4fa302ac461d","last_reissued_at":"2026-07-04T17:20:59.367986Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:20:59.367986Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/0103263","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":"2026-07-04T17:20:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kc8688LrqJivUWVvVHr60TRCX7ErnaVbV+61rsxnTwzSg7xdsexhPEh41+4v+HIYJiX3NoCD2Sz3zLGrGh+0AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T04:53:29.806532Z"},"content_sha256":"4b3651e82ff8dc3cf20164d9b6e573b9082a0e1e775f7c32966c6bc7fcfd986e","schema_version":"1.0","event_id":"sha256:4b3651e82ff8dc3cf20164d9b6e573b9082a0e1e775f7c32966c6bc7fcfd986e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:NXBF4ZDDDGNWKJVP3JBP2W3DLK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Low energy analysis of pi N --> pi N","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"H. Leutwyler, T. Becher","submitted_at":"2001-03-24T02:36:17Z","abstract_excerpt":"We derive a representation for the pion nucleon scattering amplitude that is valid to the fourth order of the chiral expansion. To obtain the correct analytic structure of the singularities in the low energy region, we have performed the calculation in a relativistic framework (infrared regularization). The result can be written in terms of functions of a single variable. We study the corresponding dispersion relations and discuss the problems encountered in the straightforward nonrelativistic expansion of the infrared singularities. As an application, we evaluate the corrections to the Goldbe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0103263","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/0103263/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":"2026-07-04T17:20:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JvCLth9ZP9+AmxHTO+jvqje0uAdcCYu8G+HfWzV6dK7L5+rAlzx29pbO+BtXSTjnrQaD+w/2W3L3pjp+p2jxCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T04:53:29.807093Z"},"content_sha256":"42f30398b93e3e9de0afb623107615377dc9225fc4eeb45699741043f47ec388","schema_version":"1.0","event_id":"sha256:42f30398b93e3e9de0afb623107615377dc9225fc4eeb45699741043f47ec388"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NXBF4ZDDDGNWKJVP3JBP2W3DLK/bundle.json","state_url":"https://pith.science/pith/NXBF4ZDDDGNWKJVP3JBP2W3DLK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NXBF4ZDDDGNWKJVP3JBP2W3DLK/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":"2026-08-13T04:53:29Z","links":{"resolver":"https://pith.science/pith/NXBF4ZDDDGNWKJVP3JBP2W3DLK","bundle":"https://pith.science/pith/NXBF4ZDDDGNWKJVP3JBP2W3DLK/bundle.json","state":"https://pith.science/pith/NXBF4ZDDDGNWKJVP3JBP2W3DLK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NXBF4ZDDDGNWKJVP3JBP2W3DLK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:NXBF4ZDDDGNWKJVP3JBP2W3DLK","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":"d88f28000580879ec29c9899e56834546f77081ea6c565964c1f0dbe35eb919a","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2001-03-24T02:36:17Z","title_canon_sha256":"b99ec1c446caba7eba4b00543dc2d2b52303c1f362167645458d421b2f301aa2"},"schema_version":"1.0","source":{"id":"hep-ph/0103263","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0103263","created_at":"2026-07-04T17:20:59Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0103263v2","created_at":"2026-07-04T17:20:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0103263","created_at":"2026-07-04T17:20:59Z"},{"alias_kind":"pith_short_12","alias_value":"NXBF4ZDDDGNW","created_at":"2026-07-04T17:20:59Z"},{"alias_kind":"pith_short_16","alias_value":"NXBF4ZDDDGNWKJVP","created_at":"2026-07-04T17:20:59Z"},{"alias_kind":"pith_short_8","alias_value":"NXBF4ZDD","created_at":"2026-07-04T17:20:59Z"}],"graph_snapshots":[{"event_id":"sha256:42f30398b93e3e9de0afb623107615377dc9225fc4eeb45699741043f47ec388","target":"graph","created_at":"2026-07-04T17:20:59Z","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/0103263/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We derive a representation for the pion nucleon scattering amplitude that is valid to the fourth order of the chiral expansion. To obtain the correct analytic structure of the singularities in the low energy region, we have performed the calculation in a relativistic framework (infrared regularization). The result can be written in terms of functions of a single variable. We study the corresponding dispersion relations and discuss the problems encountered in the straightforward nonrelativistic expansion of the infrared singularities. As an application, we evaluate the corrections to the Goldbe","authors_text":"H. Leutwyler, T. Becher","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"2001-03-24T02:36:17Z","title":"Low energy analysis of pi N --> pi N"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0103263","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":"sha256:4b3651e82ff8dc3cf20164d9b6e573b9082a0e1e775f7c32966c6bc7fcfd986e","target":"record","created_at":"2026-07-04T17:20:59Z","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":"d88f28000580879ec29c9899e56834546f77081ea6c565964c1f0dbe35eb919a","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2001-03-24T02:36:17Z","title_canon_sha256":"b99ec1c446caba7eba4b00543dc2d2b52303c1f362167645458d421b2f301aa2"},"schema_version":"1.0","source":{"id":"hep-ph/0103263","kind":"arxiv","version":2}},"canonical_sha256":"6dc25e6463199b6526afda42fd5b635aa33ed1487167896672bb4fa302ac461d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6dc25e6463199b6526afda42fd5b635aa33ed1487167896672bb4fa302ac461d","first_computed_at":"2026-07-04T17:20:59.367986Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:20:59.367986Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4pv4EoM95mr2w7dtkf4gadozrJBmRqnxhrhLjAtLQvXB04RTW67b4LoTlonxxdBBpT97hqqqpZFSJQxAliLqBg==","signature_status":"signed_v1","signed_at":"2026-07-04T17:20:59.368340Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/0103263","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b3651e82ff8dc3cf20164d9b6e573b9082a0e1e775f7c32966c6bc7fcfd986e","sha256:42f30398b93e3e9de0afb623107615377dc9225fc4eeb45699741043f47ec388"],"state_sha256":"76a3fe8febc0af12a46bcc05588e67d2b908b50d3fd97d7372b6dbdb853933da"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4HDqCmvFz66JjAaaOeXRx6CC+eJCHJlyRuhszgyi9JdE7Y2GqYHTulx5H+zfQA2uXx65BQiKs91bYLqBKEGmDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T04:53:29.837564Z","bundle_sha256":"7b2db132b5c4d3c504dd893ae41c5fc50988d9bfcde100a5cbeccadfe9f05a23"}}