{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:KPFYTIUGE3SUK6ZL2ZIPY7P6TG","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":"25816fa55b368dbb736d6c8d60a1f233336133bd77663717eae1c344a8c1a8bc","cross_cats_sorted":["nucl-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-11-18T07:29:01Z","title_canon_sha256":"2c5d2bf6d10d85a44460e68deea55b73ee61575d05c7f8d67dd8ae8d6585d7a1"},"schema_version":"1.0","source":{"id":"1511.05679","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.05679","created_at":"2026-05-18T01:12:07Z"},{"alias_kind":"arxiv_version","alias_value":"1511.05679v1","created_at":"2026-05-18T01:12:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.05679","created_at":"2026-05-18T01:12:07Z"},{"alias_kind":"pith_short_12","alias_value":"KPFYTIUGE3SU","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"KPFYTIUGE3SUK6ZL","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"KPFYTIUG","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:dd298040cacbf9e9e80c12d5a02d7d1b0bfbad517f8cef1b17fefcc6a33067df","target":"graph","created_at":"2026-05-18T01:12:07Z","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 discuss the extended on-mass-shell scheme for manifestly Lorentz-invariant baryon chiral perturbation theory. We present a calculation of pion photo- and electroproduction up to and including order $q^4$. The low-energy constants have been fixed by fitting experimental data in all available reaction channels. Our results can be accessed via a web interface, the so-called chiral MAID (http://www.kph.uni-mainz.de/MAID/chiralmaid/). We explain how our program works and how it can be used for further analysis.","authors_text":"B. C. Lehnhart, L. Tiator, M. Hilt, S. Scherer","cross_cats":["nucl-ex","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-11-18T07:29:01Z","title":"Pion photo- and electroproduction and the chiral MAID interface"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.05679","kind":"arxiv","version":1},"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":"sha256:7fcdc2e99b9ef1c9fbbe3142c99dd087b515f5f3760a095cc6378dae1ce16914","target":"record","created_at":"2026-05-18T01:12:07Z","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":"25816fa55b368dbb736d6c8d60a1f233336133bd77663717eae1c344a8c1a8bc","cross_cats_sorted":["nucl-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-11-18T07:29:01Z","title_canon_sha256":"2c5d2bf6d10d85a44460e68deea55b73ee61575d05c7f8d67dd8ae8d6585d7a1"},"schema_version":"1.0","source":{"id":"1511.05679","kind":"arxiv","version":1}},"canonical_sha256":"53cb89a28626e5457b2bd650fc7dfe998e8dcf2c9ae7e3e08336d0be17661949","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"53cb89a28626e5457b2bd650fc7dfe998e8dcf2c9ae7e3e08336d0be17661949","first_computed_at":"2026-05-18T01:12:07.425579Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:07.425579Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ExWfhsoHhAqs3/QKj+LrC/wQU/qL0MgEMh+iOHgL7G4VMLic1HeHrUTAeyLxNUmTsfU8RTABV1ob7utl8YSsCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:07.425974Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.05679","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7fcdc2e99b9ef1c9fbbe3142c99dd087b515f5f3760a095cc6378dae1ce16914","sha256:dd298040cacbf9e9e80c12d5a02d7d1b0bfbad517f8cef1b17fefcc6a33067df"],"state_sha256":"20885809494b62080324c65200bc1f46110eb74daf907fce5e7d44d42c9ea12d"}