{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:EFZHVW3YW2M3WUYTDHXTLXMR7Q","short_pith_number":"pith:EFZHVW3Y","canonical_record":{"source":{"id":"1111.7137","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-11-30T12:23:14Z","cross_cats_sorted":["hep-ex","hep-lat"],"title_canon_sha256":"4cc936db970ad77e206e20fb1b9ea75c3f5ea83dc5f1cead48d7f8c8e8d6c4c4","abstract_canon_sha256":"644d6170b94b55b1bf72a61c8d476a01afcf600a0e7ba36f6df76c2cd8a52c18"},"schema_version":"1.0"},"canonical_sha256":"21727adb78b699bb531319ef35dd91fc039a90b6ae47fd72eefde35beb6b230b","source":{"kind":"arxiv","id":"1111.7137","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.7137","created_at":"2026-05-18T03:37:29Z"},{"alias_kind":"arxiv_version","alias_value":"1111.7137v2","created_at":"2026-05-18T03:37:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.7137","created_at":"2026-05-18T03:37:29Z"},{"alias_kind":"pith_short_12","alias_value":"EFZHVW3YW2M3","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"EFZHVW3YW2M3WUYT","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"EFZHVW3Y","created_at":"2026-05-18T12:26:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:EFZHVW3YW2M3WUYTDHXTLXMR7Q","target":"record","payload":{"canonical_record":{"source":{"id":"1111.7137","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-11-30T12:23:14Z","cross_cats_sorted":["hep-ex","hep-lat"],"title_canon_sha256":"4cc936db970ad77e206e20fb1b9ea75c3f5ea83dc5f1cead48d7f8c8e8d6c4c4","abstract_canon_sha256":"644d6170b94b55b1bf72a61c8d476a01afcf600a0e7ba36f6df76c2cd8a52c18"},"schema_version":"1.0"},"canonical_sha256":"21727adb78b699bb531319ef35dd91fc039a90b6ae47fd72eefde35beb6b230b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:37:29.059708Z","signature_b64":"R0V+jK33ynGM4FpQDW54EQw0wU1cFIXMfOyU5OiOAhxfpcn3XmDIF4HvQ5WdIicFIs4vWPKsuaQkB1xkARj6AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"21727adb78b699bb531319ef35dd91fc039a90b6ae47fd72eefde35beb6b230b","last_reissued_at":"2026-05-18T03:37:29.059220Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:37:29.059220Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1111.7137","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":"2026-05-18T03:37:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PYtLJCdedid2T2cWuWN9lk9f96TmxMfuG3GFkkR0Tgs9pPIM5YmTpTVc/ikyggi30Zi/x5B+x49D1bCKSC43Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T06:29:23.899856Z"},"content_sha256":"7bd911ac0727ab047d5d2f5522011fdb9c87783000276b0671bbea8f09b359e4","schema_version":"1.0","event_id":"sha256:7bd911ac0727ab047d5d2f5522011fdb9c87783000276b0671bbea8f09b359e4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:EFZHVW3YW2M3WUYTDHXTLXMR7Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pion-Photon Transition Form Factor and Pion Distribution Amplitude in QCD: Facing the Enigmatic Behavior of the BaBar Data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","hep-lat"],"primary_cat":"hep-ph","authors_text":"Alexander P. Bakulev, A. V. Pimikov, N. G. Stefanis, S. V. Mikhailov","submitted_at":"2011-11-30T12:23:14Z","abstract_excerpt":"We present an extended analysis of the data for the pion-photon transition form factor from different experiments, CELLO, CLEO, and BaBar, and discuss various theoretical approaches which try to reason from them. We focus on the divergent behavior of the BaBar data for the pion and those for the $\\eta(\\eta')$ pseudoscalar mesons and comment on recently proposed explanations for this discrepancy. We argue that it is not possible at present to accommodate these data within the standard QCD framework self-consistently."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.7137","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":"2026-05-18T03:37:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W527nqhEpPfSlMoDpqUIIKZLzgY/pJ3YLQpSpzfow9KLduEDWhF9H2XOUqF6FBWQoegGdC8M44DY95+z48HdBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T06:29:23.900318Z"},"content_sha256":"5696a877152d510e8ca4ddec93201ba1cf6b71d4f83f82ab80176c13233e4a3b","schema_version":"1.0","event_id":"sha256:5696a877152d510e8ca4ddec93201ba1cf6b71d4f83f82ab80176c13233e4a3b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EFZHVW3YW2M3WUYTDHXTLXMR7Q/bundle.json","state_url":"https://pith.science/pith/EFZHVW3YW2M3WUYTDHXTLXMR7Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EFZHVW3YW2M3WUYTDHXTLXMR7Q/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":"2026-08-18T06:29:23Z","links":{"resolver":"https://pith.science/pith/EFZHVW3YW2M3WUYTDHXTLXMR7Q","bundle":"https://pith.science/pith/EFZHVW3YW2M3WUYTDHXTLXMR7Q/bundle.json","state":"https://pith.science/pith/EFZHVW3YW2M3WUYTDHXTLXMR7Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EFZHVW3YW2M3WUYTDHXTLXMR7Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:EFZHVW3YW2M3WUYTDHXTLXMR7Q","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":"644d6170b94b55b1bf72a61c8d476a01afcf600a0e7ba36f6df76c2cd8a52c18","cross_cats_sorted":["hep-ex","hep-lat"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-11-30T12:23:14Z","title_canon_sha256":"4cc936db970ad77e206e20fb1b9ea75c3f5ea83dc5f1cead48d7f8c8e8d6c4c4"},"schema_version":"1.0","source":{"id":"1111.7137","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.7137","created_at":"2026-05-18T03:37:29Z"},{"alias_kind":"arxiv_version","alias_value":"1111.7137v2","created_at":"2026-05-18T03:37:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.7137","created_at":"2026-05-18T03:37:29Z"},{"alias_kind":"pith_short_12","alias_value":"EFZHVW3YW2M3","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"EFZHVW3YW2M3WUYT","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"EFZHVW3Y","created_at":"2026-05-18T12:26:28Z"}],"graph_snapshots":[{"event_id":"sha256:5696a877152d510e8ca4ddec93201ba1cf6b71d4f83f82ab80176c13233e4a3b","target":"graph","created_at":"2026-05-18T03:37:29Z","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 present an extended analysis of the data for the pion-photon transition form factor from different experiments, CELLO, CLEO, and BaBar, and discuss various theoretical approaches which try to reason from them. We focus on the divergent behavior of the BaBar data for the pion and those for the $\\eta(\\eta')$ pseudoscalar mesons and comment on recently proposed explanations for this discrepancy. We argue that it is not possible at present to accommodate these data within the standard QCD framework self-consistently.","authors_text":"Alexander P. Bakulev, A. V. Pimikov, N. G. Stefanis, S. V. Mikhailov","cross_cats":["hep-ex","hep-lat"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-11-30T12:23:14Z","title":"Pion-Photon Transition Form Factor and Pion Distribution Amplitude in QCD: Facing the Enigmatic Behavior of the BaBar Data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.7137","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":"sha256:7bd911ac0727ab047d5d2f5522011fdb9c87783000276b0671bbea8f09b359e4","target":"record","created_at":"2026-05-18T03:37:29Z","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":"644d6170b94b55b1bf72a61c8d476a01afcf600a0e7ba36f6df76c2cd8a52c18","cross_cats_sorted":["hep-ex","hep-lat"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-11-30T12:23:14Z","title_canon_sha256":"4cc936db970ad77e206e20fb1b9ea75c3f5ea83dc5f1cead48d7f8c8e8d6c4c4"},"schema_version":"1.0","source":{"id":"1111.7137","kind":"arxiv","version":2}},"canonical_sha256":"21727adb78b699bb531319ef35dd91fc039a90b6ae47fd72eefde35beb6b230b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"21727adb78b699bb531319ef35dd91fc039a90b6ae47fd72eefde35beb6b230b","first_computed_at":"2026-05-18T03:37:29.059220Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:37:29.059220Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"R0V+jK33ynGM4FpQDW54EQw0wU1cFIXMfOyU5OiOAhxfpcn3XmDIF4HvQ5WdIicFIs4vWPKsuaQkB1xkARj6AA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:37:29.059708Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.7137","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7bd911ac0727ab047d5d2f5522011fdb9c87783000276b0671bbea8f09b359e4","sha256:5696a877152d510e8ca4ddec93201ba1cf6b71d4f83f82ab80176c13233e4a3b"],"state_sha256":"7f5de43f3d85bd63409603037a01cf6e32acd8b6f2c2005b463dd7cb4b0aa933"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W91YC+kx3F37Vu5yi/eqmlkD5jmHXImPDrjEwXSXvuBCEz9H+iVZm3vg8X4ryeoJ28o4iDlXKQNvvCw9X4GnAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T06:29:23.907778Z","bundle_sha256":"f8e285c333a63ff21b1eedacc95a7a573e1cb4ac5e0418e2ad72be2d74c4c4bb"}}