{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:42GST52STHISKMSUIBYCBYAZL4","short_pith_number":"pith:42GST52S","canonical_record":{"source":{"id":"1612.08626","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-12-27T13:20:40Z","cross_cats_sorted":["nucl-ex","nucl-th"],"title_canon_sha256":"d91c5d0a108c25c1d3487508bed43b77eacdc3da014db4012c3c4f76bc65205c","abstract_canon_sha256":"ac644b71c7948bd5149fc4010a451dfa75ff0c3d5643794b49818162f9cb4f88"},"schema_version":"1.0"},"canonical_sha256":"e68d29f75299d1253254407020e0195f14d4cb55f56d465fb92f06c04c3bf90e","source":{"kind":"arxiv","id":"1612.08626","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.08626","created_at":"2026-05-18T00:50:12Z"},{"alias_kind":"arxiv_version","alias_value":"1612.08626v2","created_at":"2026-05-18T00:50:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.08626","created_at":"2026-05-18T00:50:12Z"},{"alias_kind":"pith_short_12","alias_value":"42GST52STHIS","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"42GST52STHISKMSU","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"42GST52S","created_at":"2026-05-18T12:29:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:42GST52STHISKMSUIBYCBYAZL4","target":"record","payload":{"canonical_record":{"source":{"id":"1612.08626","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-12-27T13:20:40Z","cross_cats_sorted":["nucl-ex","nucl-th"],"title_canon_sha256":"d91c5d0a108c25c1d3487508bed43b77eacdc3da014db4012c3c4f76bc65205c","abstract_canon_sha256":"ac644b71c7948bd5149fc4010a451dfa75ff0c3d5643794b49818162f9cb4f88"},"schema_version":"1.0"},"canonical_sha256":"e68d29f75299d1253254407020e0195f14d4cb55f56d465fb92f06c04c3bf90e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:50:12.287548Z","signature_b64":"fQDn941LqAPGh6ii2rAKRgHk3YRK4M8lb2O14NTd91+c80Hrs2Eo+o+O3n7bL7CvLDxSR183VlcsgCrTbJsGCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e68d29f75299d1253254407020e0195f14d4cb55f56d465fb92f06c04c3bf90e","last_reissued_at":"2026-05-18T00:50:12.287124Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:50:12.287124Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1612.08626","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":"2026-05-18T00:50:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"spu7FqejjoBKU82uEOglwrzRLAAZ7Vkyo77tL8DxOG5x4qfaDkTH/QCYZ6xfYwcQrfbG3s3R2E9odkzq0Xz1CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T23:30:35.035066Z"},"content_sha256":"acfea45804bbc9804dd3e6c47ad94aae94e6ffaddd154a55ccfa9e84bd8221a7","schema_version":"1.0","event_id":"sha256:acfea45804bbc9804dd3e6c47ad94aae94e6ffaddd154a55ccfa9e84bd8221a7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:42GST52STHISKMSUIBYCBYAZL4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Generalized polarizabilities of the nucleon in baryon chiral perturbation theory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"Marc Vanderhaeghen, Vadim Lensky, Vladimir Pascalutsa","submitted_at":"2016-12-27T13:20:40Z","abstract_excerpt":"The nucleon generalized polarizabilities (GPs), probed in virtual Compton scattering (VCS), describe the spatial distribution of the polarization density in a nucleon. They are accessed experimentally via the process of electron-proton bremsstrahlung ($ep\\to ep\\gamma$) at electron-beam facilities, such as MIT-Bates, CEBAF (Jefferson Lab), and MAMI (Mainz). We present the calculation of the nucleon GPs and VCS observables at next-to-leading order in baryon chiral perturbation theory (B$\\chi$PT), and confront the results with the empirical information. At this order our results are predictions, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.08626","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":"2026-05-18T00:50:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+xycvEZWJrJsNGcIFNK9LFbpCxSt+6MpK98tM2ujxujXHXV3LXYK0n38b0sXALsJ2IwiZ56psxY9g1xnTNK0Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T23:30:35.035436Z"},"content_sha256":"07ad13e9cd9e631917c85af8d7a1c8700dc90f96b8d2898631fa515c7b1c1b3b","schema_version":"1.0","event_id":"sha256:07ad13e9cd9e631917c85af8d7a1c8700dc90f96b8d2898631fa515c7b1c1b3b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/42GST52STHISKMSUIBYCBYAZL4/bundle.json","state_url":"https://pith.science/pith/42GST52STHISKMSUIBYCBYAZL4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/42GST52STHISKMSUIBYCBYAZL4/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":"2026-06-01T23:30:35Z","links":{"resolver":"https://pith.science/pith/42GST52STHISKMSUIBYCBYAZL4","bundle":"https://pith.science/pith/42GST52STHISKMSUIBYCBYAZL4/bundle.json","state":"https://pith.science/pith/42GST52STHISKMSUIBYCBYAZL4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/42GST52STHISKMSUIBYCBYAZL4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:42GST52STHISKMSUIBYCBYAZL4","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":"ac644b71c7948bd5149fc4010a451dfa75ff0c3d5643794b49818162f9cb4f88","cross_cats_sorted":["nucl-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-12-27T13:20:40Z","title_canon_sha256":"d91c5d0a108c25c1d3487508bed43b77eacdc3da014db4012c3c4f76bc65205c"},"schema_version":"1.0","source":{"id":"1612.08626","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.08626","created_at":"2026-05-18T00:50:12Z"},{"alias_kind":"arxiv_version","alias_value":"1612.08626v2","created_at":"2026-05-18T00:50:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.08626","created_at":"2026-05-18T00:50:12Z"},{"alias_kind":"pith_short_12","alias_value":"42GST52STHIS","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"42GST52STHISKMSU","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"42GST52S","created_at":"2026-05-18T12:29:58Z"}],"graph_snapshots":[{"event_id":"sha256:07ad13e9cd9e631917c85af8d7a1c8700dc90f96b8d2898631fa515c7b1c1b3b","target":"graph","created_at":"2026-05-18T00:50:12Z","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":"The nucleon generalized polarizabilities (GPs), probed in virtual Compton scattering (VCS), describe the spatial distribution of the polarization density in a nucleon. They are accessed experimentally via the process of electron-proton bremsstrahlung ($ep\\to ep\\gamma$) at electron-beam facilities, such as MIT-Bates, CEBAF (Jefferson Lab), and MAMI (Mainz). We present the calculation of the nucleon GPs and VCS observables at next-to-leading order in baryon chiral perturbation theory (B$\\chi$PT), and confront the results with the empirical information. At this order our results are predictions, ","authors_text":"Marc Vanderhaeghen, Vadim Lensky, Vladimir Pascalutsa","cross_cats":["nucl-ex","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-12-27T13:20:40Z","title":"Generalized polarizabilities of the nucleon in baryon chiral perturbation theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.08626","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:acfea45804bbc9804dd3e6c47ad94aae94e6ffaddd154a55ccfa9e84bd8221a7","target":"record","created_at":"2026-05-18T00:50:12Z","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":"ac644b71c7948bd5149fc4010a451dfa75ff0c3d5643794b49818162f9cb4f88","cross_cats_sorted":["nucl-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-12-27T13:20:40Z","title_canon_sha256":"d91c5d0a108c25c1d3487508bed43b77eacdc3da014db4012c3c4f76bc65205c"},"schema_version":"1.0","source":{"id":"1612.08626","kind":"arxiv","version":2}},"canonical_sha256":"e68d29f75299d1253254407020e0195f14d4cb55f56d465fb92f06c04c3bf90e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e68d29f75299d1253254407020e0195f14d4cb55f56d465fb92f06c04c3bf90e","first_computed_at":"2026-05-18T00:50:12.287124Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:12.287124Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fQDn941LqAPGh6ii2rAKRgHk3YRK4M8lb2O14NTd91+c80Hrs2Eo+o+O3n7bL7CvLDxSR183VlcsgCrTbJsGCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:12.287548Z","signed_message":"canonical_sha256_bytes"},"source_id":"1612.08626","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:acfea45804bbc9804dd3e6c47ad94aae94e6ffaddd154a55ccfa9e84bd8221a7","sha256:07ad13e9cd9e631917c85af8d7a1c8700dc90f96b8d2898631fa515c7b1c1b3b"],"state_sha256":"94a1bc3ec6a1283ac006b6a477f586257a6f82c11a787237a936adb5800826b8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yRX5d4KW06KQGQ8TK2Q6yWJ6jVGIzTvt/LWynfhPKmH7ulf9lwtU4an/sMKH4zXmC2FbS5TrNjXoLeKl65V/Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T23:30:35.037393Z","bundle_sha256":"9cd743b419a579af0da1a3e29a4eb23c4c7b92d0f72bb2119d9cb04cdb967036"}}