{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:5OFB7OVSHBB6J7PSWI2UVPU77B","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":"425e3f9588982410ac0201d5ba548cd76361fcc9add65d803c2ae82e31eeede5","cross_cats_sorted":["hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-11-06T09:09:10Z","title_canon_sha256":"945fff25b4ded3bab57167ee186da0314ff2c3369cfaf08c7d396b57e4ba8400"},"schema_version":"1.0","source":{"id":"1211.1148","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.1148","created_at":"2026-05-18T01:53:25Z"},{"alias_kind":"arxiv_version","alias_value":"1211.1148v2","created_at":"2026-05-18T01:53:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.1148","created_at":"2026-05-18T01:53:25Z"},{"alias_kind":"pith_short_12","alias_value":"5OFB7OVSHBB6","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"5OFB7OVSHBB6J7PS","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"5OFB7OVS","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:22ab8ce0e32a50db078a3f4f310128f622cfb6480e7feb3d01854158615eca24","target":"graph","created_at":"2026-05-18T01:53:25Z","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":"We have reanalyzed the $\\pi ^{\\pm} p$ scattering data at low energy in the Coulomb-nuclear interference region as measured by the CHAOS group at TRIUMF with the aim to determine the pion-nucleon $\\sigma$ term. The resulting value $\\sigma=(44\\pm 12)$ MeV, while in agreement with lattice QCD calculations and compatible with other recent analyses, is significantly lower than that from the GWU-TRIUMF analysis of 2002.","authors_text":"G. J. Wagner, H. Clement, J. Stahov","cross_cats":["hep-ph","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-11-06T09:09:10Z","title":"Evaluation of the Pion-Nucleon Sigma Term from CHAOS Data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.1148","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":"sha256:2b2925c4340d6ac42ed6a68c1bcb8902162bb5ff7fd5a5b65d37ec7269a7f4e9","target":"record","created_at":"2026-05-18T01:53:25Z","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":"425e3f9588982410ac0201d5ba548cd76361fcc9add65d803c2ae82e31eeede5","cross_cats_sorted":["hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-11-06T09:09:10Z","title_canon_sha256":"945fff25b4ded3bab57167ee186da0314ff2c3369cfaf08c7d396b57e4ba8400"},"schema_version":"1.0","source":{"id":"1211.1148","kind":"arxiv","version":2}},"canonical_sha256":"eb8a1fbab23843e4fdf2b2354abe9ff87dd936267bcdae29d4ddd28096e1e361","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eb8a1fbab23843e4fdf2b2354abe9ff87dd936267bcdae29d4ddd28096e1e361","first_computed_at":"2026-05-18T01:53:25.212018Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:25.212018Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JWjxhEht5i5/+DoF90l13if80kPJgVTk6my5ztKbnxc/w/lb9Sd9kuD2cGm8Y3SNLDWGT6oS/96Xf7oiq7qWDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:25.212513Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.1148","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2b2925c4340d6ac42ed6a68c1bcb8902162bb5ff7fd5a5b65d37ec7269a7f4e9","sha256:22ab8ce0e32a50db078a3f4f310128f622cfb6480e7feb3d01854158615eca24"],"state_sha256":"331433729b2fd757c81ffc65f5f202080417389ef39946447e16db17c713bd5e"}