{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:J5VXAPNZD23UJWUM2GVZNQTXAT","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":"3f71bc53689abcefa5e4b5c07e929fe2b0a7658739e9b0adf517e803b8d2625e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-04-27T09:43:30Z","title_canon_sha256":"dc58fd5c3ba2e8574fc545df87e31b4f762e05afef7370dc221a98eb45021020"},"schema_version":"1.0","source":{"id":"1504.07001","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.07001","created_at":"2026-05-18T01:18:49Z"},{"alias_kind":"arxiv_version","alias_value":"1504.07001v2","created_at":"2026-05-18T01:18:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.07001","created_at":"2026-05-18T01:18:49Z"},{"alias_kind":"pith_short_12","alias_value":"J5VXAPNZD23U","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"J5VXAPNZD23UJWUM","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"J5VXAPNZ","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:94c766c6e8c605c37fa7fdc2691047f99714d32567ca5eabfe8ec70ade046790","target":"graph","created_at":"2026-05-18T01:18:49Z","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 current 3$\\sigma$ discrepancy between experiment and Standard Model predictions for $\\pi^0 \\to e^+e^-$ is reconsidered using the Pad\\'e Theory for bivariate functions, the Canterbury approximants. This method provides a model-independent data-driven approximation to the decay as soon as experimental data for the doubly virtual $\\pi^0$ transition form factor are available. It also implements the correct QCD constraints of the form factor both at low- and high-energies. We reassess the Standard Model result including, for the first time, a systematic error. Our result, BR$(\\pi^0 \\to e^+e^-)=","authors_text":"Pablo Sanchez-Puertas, Pere Masjuan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-04-27T09:43:30Z","title":"Phenomenology of bivariate approximants: the pi0 to e+e- case and its impact on the electron and muon g-2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.07001","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":"sha256:44cf3cdd1441ede9c22459158ee54c17b9c23f59accaec3e35d04ff3631d081a","target":"record","created_at":"2026-05-18T01:18:49Z","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":"3f71bc53689abcefa5e4b5c07e929fe2b0a7658739e9b0adf517e803b8d2625e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-04-27T09:43:30Z","title_canon_sha256":"dc58fd5c3ba2e8574fc545df87e31b4f762e05afef7370dc221a98eb45021020"},"schema_version":"1.0","source":{"id":"1504.07001","kind":"arxiv","version":2}},"canonical_sha256":"4f6b703db91eb744da8cd1ab96c27704f68a26c498e03e151570147a4baef501","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4f6b703db91eb744da8cd1ab96c27704f68a26c498e03e151570147a4baef501","first_computed_at":"2026-05-18T01:18:49.366740Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:49.366740Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1Q5WaKAQrA/mjwbwlDhsIljarSiFQvxx0ysqU3oDTXIKI2dNmq3jy0omz2tIXMgUjm1YLq017xzIOnCOCMTgAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:49.367495Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.07001","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:44cf3cdd1441ede9c22459158ee54c17b9c23f59accaec3e35d04ff3631d081a","sha256:94c766c6e8c605c37fa7fdc2691047f99714d32567ca5eabfe8ec70ade046790"],"state_sha256":"88712f21690c2618d55ac410f8f9e466724b367d1855da3309373af81c9eef39"}