{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:Y4VWXTDSOQQ2KCXO5MDBRQZXXJ","short_pith_number":"pith:Y4VWXTDS","schema_version":"1.0","canonical_sha256":"c72b6bcc727421a50aeeeb0618c337ba6cf9f307d0c3520d80dcf8709973eee4","source":{"kind":"arxiv","id":"1306.5987","version":1},"attestation_state":"computed","paper":{"title":"Hadronic light-by-light scattering in the muon g-2: impact of proposed measurements of the (pi^0 -> gamma gamma) decay width and the (gamma^* gamma -> pi^0) transition form factor with the KLOE-2 experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Andreas Nyffeler (Harish-Chandra Research Institute)","submitted_at":"2013-06-25T14:58:05Z","abstract_excerpt":"The calculation of the hadronic light-by-light scattering contribution to the muon g-2 currently relies entirely on models. Measurements of the form factors which describe the interactions of hadrons with photons can help to constrain the models and reduce the uncertainty in a_{mu}(had. LbyL) = (116 \\pm 40) x 10^{-11}. In the dominant pion-exchange contribution, the form factor F_{{pi^0}^*gamma^*gamma^*}((q_1 + q_2)^2, q_1^2, q_2^2) with an off-shell pion enters. In general, measurements of the transition form factor F(Q^2) = F_{{pi^0}^*gamma^*gamma^*}(m_{pi}^2, -Q^2, 0) are only sensitive to "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1306.5987","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2013-06-25T14:58:05Z","cross_cats_sorted":[],"title_canon_sha256":"3e9d0cc53fc6876bd51ab8461fe6dc8c0556d7ecdbf296f45b9759fb2cc5ae27","abstract_canon_sha256":"4ffb70863ea3b3bf7fa62aa43ef0421aa8b0081a6ba366e4e3be73c890c12060"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:19:58.019646Z","signature_b64":"czNLzmMxTu+W5azr4g/+fYVtoUJmDxrDtIyztjWmAEWqCo7G/vp6dwsXuzuxn0+vkSEanP0OIl7sIvFK2TiPCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c72b6bcc727421a50aeeeb0618c337ba6cf9f307d0c3520d80dcf8709973eee4","last_reissued_at":"2026-05-18T03:19:58.018991Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:19:58.018991Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Hadronic light-by-light scattering in the muon g-2: impact of proposed measurements of the (pi^0 -> gamma gamma) decay width and the (gamma^* gamma -> pi^0) transition form factor with the KLOE-2 experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Andreas Nyffeler (Harish-Chandra Research Institute)","submitted_at":"2013-06-25T14:58:05Z","abstract_excerpt":"The calculation of the hadronic light-by-light scattering contribution to the muon g-2 currently relies entirely on models. Measurements of the form factors which describe the interactions of hadrons with photons can help to constrain the models and reduce the uncertainty in a_{mu}(had. LbyL) = (116 \\pm 40) x 10^{-11}. In the dominant pion-exchange contribution, the form factor F_{{pi^0}^*gamma^*gamma^*}((q_1 + q_2)^2, q_1^2, q_2^2) with an off-shell pion enters. In general, measurements of the transition form factor F(Q^2) = F_{{pi^0}^*gamma^*gamma^*}(m_{pi}^2, -Q^2, 0) are only sensitive to "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.5987","kind":"arxiv","version":1},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1306.5987","created_at":"2026-05-18T03:19:58.019090+00:00"},{"alias_kind":"arxiv_version","alias_value":"1306.5987v1","created_at":"2026-05-18T03:19:58.019090+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.5987","created_at":"2026-05-18T03:19:58.019090+00:00"},{"alias_kind":"pith_short_12","alias_value":"Y4VWXTDSOQQ2","created_at":"2026-05-18T12:28:06.772260+00:00"},{"alias_kind":"pith_short_16","alias_value":"Y4VWXTDSOQQ2KCXO","created_at":"2026-05-18T12:28:06.772260+00:00"},{"alias_kind":"pith_short_8","alias_value":"Y4VWXTDS","created_at":"2026-05-18T12:28:06.772260+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/Y4VWXTDSOQQ2KCXO5MDBRQZXXJ","json":"https://pith.science/pith/Y4VWXTDSOQQ2KCXO5MDBRQZXXJ.json","graph_json":"https://pith.science/api/pith-number/Y4VWXTDSOQQ2KCXO5MDBRQZXXJ/graph.json","events_json":"https://pith.science/api/pith-number/Y4VWXTDSOQQ2KCXO5MDBRQZXXJ/events.json","paper":"https://pith.science/paper/Y4VWXTDS"},"agent_actions":{"view_html":"https://pith.science/pith/Y4VWXTDSOQQ2KCXO5MDBRQZXXJ","download_json":"https://pith.science/pith/Y4VWXTDSOQQ2KCXO5MDBRQZXXJ.json","view_paper":"https://pith.science/paper/Y4VWXTDS","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1306.5987&json=true","fetch_graph":"https://pith.science/api/pith-number/Y4VWXTDSOQQ2KCXO5MDBRQZXXJ/graph.json","fetch_events":"https://pith.science/api/pith-number/Y4VWXTDSOQQ2KCXO5MDBRQZXXJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/Y4VWXTDSOQQ2KCXO5MDBRQZXXJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/Y4VWXTDSOQQ2KCXO5MDBRQZXXJ/action/storage_attestation","attest_author":"https://pith.science/pith/Y4VWXTDSOQQ2KCXO5MDBRQZXXJ/action/author_attestation","sign_citation":"https://pith.science/pith/Y4VWXTDSOQQ2KCXO5MDBRQZXXJ/action/citation_signature","submit_replication":"https://pith.science/pith/Y4VWXTDSOQQ2KCXO5MDBRQZXXJ/action/replication_record"}},"created_at":"2026-05-18T03:19:58.019090+00:00","updated_at":"2026-05-18T03:19:58.019090+00:00"}