{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:EDUEGLVLSYTNSSA6OBQ542ERXF","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":"18d928e06e7e593ec71af79bde4af1402f1e238a7fb830f755896e46478e4fcc","cross_cats_sorted":["hep-ex","hep-lat","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-10-15T18:00:01Z","title_canon_sha256":"2d11ed92febc7f695dfd483d06671662a048603d38c5bd26f38b50ff619a48f3"},"schema_version":"1.0","source":{"id":"2010.07943","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.07943","created_at":"2026-07-05T02:07:50Z"},{"alias_kind":"arxiv_version","alias_value":"2010.07943v2","created_at":"2026-07-05T02:07:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.07943","created_at":"2026-07-05T02:07:50Z"},{"alias_kind":"pith_short_12","alias_value":"EDUEGLVLSYTN","created_at":"2026-07-05T02:07:50Z"},{"alias_kind":"pith_short_16","alias_value":"EDUEGLVLSYTNSSA6","created_at":"2026-07-05T02:07:50Z"},{"alias_kind":"pith_short_8","alias_value":"EDUEGLVL","created_at":"2026-07-05T02:07:50Z"}],"graph_snapshots":[{"event_id":"sha256:0730f3e894de5f143fcaea6f6317f5f490e19eb844ee2ca82d23b3a69de9430d","target":"graph","created_at":"2026-07-05T02:07:50Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2010.07943/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"At low energies hadronic vacuum polarization (HVP) is strongly dominated by two-pion intermediate states, which are responsible for about $70\\%$ of the HVP contribution to the anomalous magnetic moment of the muon, $a_\\mu^\\text{HVP}$. Lattice-QCD evaluations of the latter indicate that it might be larger than calculated dispersively on the basis of $e^+e^-\\to\\text{hadrons}$ data, at a level which would contest the long-standing discrepancy with the $a_\\mu$ measurement. In this Letter we study to which extent this $2\\pi$ contribution can be modified without, at the same time, producing a confli","authors_text":"Gilberto Colangelo, Martin Hoferichter, Peter Stoffer","cross_cats":["hep-ex","hep-lat","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-10-15T18:00:01Z","title":"Constraints on the two-pion contribution to hadronic vacuum polarization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.07943","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:d939c6b26b5fa1c0833b248e61f78b2eabe18f7b7e657670d6ad81482115f6b7","target":"record","created_at":"2026-07-05T02:07:50Z","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":"18d928e06e7e593ec71af79bde4af1402f1e238a7fb830f755896e46478e4fcc","cross_cats_sorted":["hep-ex","hep-lat","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-10-15T18:00:01Z","title_canon_sha256":"2d11ed92febc7f695dfd483d06671662a048603d38c5bd26f38b50ff619a48f3"},"schema_version":"1.0","source":{"id":"2010.07943","kind":"arxiv","version":2}},"canonical_sha256":"20e8432eab9626d9481e7061de6891b975fd91b93990d1cad1af9330ff1a6f56","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"20e8432eab9626d9481e7061de6891b975fd91b93990d1cad1af9330ff1a6f56","first_computed_at":"2026-07-05T02:07:50.512558Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:07:50.512558Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wkqTTsuB/jdjGBkW/tQ3tpPV5m+lXNa6DbNNpUvUcB33w4tEPsIWA68v27w6d6mR7cNCxqSIjK/A0i9qAiiJAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:07:50.512943Z","signed_message":"canonical_sha256_bytes"},"source_id":"2010.07943","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d939c6b26b5fa1c0833b248e61f78b2eabe18f7b7e657670d6ad81482115f6b7","sha256:0730f3e894de5f143fcaea6f6317f5f490e19eb844ee2ca82d23b3a69de9430d"],"state_sha256":"f2512e845e1dbe2eb219eaccc2d3af35bd262f6b92ccba32ddf61fdf26dc231e"}