{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:PRIG6EURCTEO4IWA2Q4HAGL6W5","short_pith_number":"pith:PRIG6EUR","canonical_record":{"source":{"id":"hep-ph/0204214","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2002-04-18T09:57:18Z","cross_cats_sorted":[],"title_canon_sha256":"7aa64b881e1031e358cec69bb73b5b70bf34c5fde0033a3231c432e07ed84842","abstract_canon_sha256":"9010a74d2341ef435a2606b281ed5ef3c8393c516d7ca1b7367e3629e999a39b"},"schema_version":"1.0"},"canonical_sha256":"7c506f129114c8ee22c0d43870197eb75585acec14899696718bd1890ccd0422","source":{"kind":"arxiv","id":"hep-ph/0204214","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0204214","created_at":"2026-05-18T04:13:25Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0204214v1","created_at":"2026-05-18T04:13:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0204214","created_at":"2026-05-18T04:13:25Z"},{"alias_kind":"pith_short_12","alias_value":"PRIG6EURCTEO","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"PRIG6EURCTEO4IWA","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"PRIG6EUR","created_at":"2026-05-18T12:25:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:PRIG6EURCTEO4IWA2Q4HAGL6W5","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/0204214","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2002-04-18T09:57:18Z","cross_cats_sorted":[],"title_canon_sha256":"7aa64b881e1031e358cec69bb73b5b70bf34c5fde0033a3231c432e07ed84842","abstract_canon_sha256":"9010a74d2341ef435a2606b281ed5ef3c8393c516d7ca1b7367e3629e999a39b"},"schema_version":"1.0"},"canonical_sha256":"7c506f129114c8ee22c0d43870197eb75585acec14899696718bd1890ccd0422","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:13:25.877580Z","signature_b64":"j/KYZVVSqCH8SFk8XjN5Fy/aXAyZYYvxyoj27A6bVQw844LaNE3QGtaTH3qNtOMimFea6JciQ3P29S2qUXjDCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7c506f129114c8ee22c0d43870197eb75585acec14899696718bd1890ccd0422","last_reissued_at":"2026-05-18T04:13:25.877074Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:13:25.877074Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/0204214","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:13:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Sw1kurzQ/+XlSAnXZd3gg0h5elVR5+zBZa+ANE9Vzfpy+sNNf6ls4uY9rb6n3hjHvszKLSoQeS80pj/eX8SDCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T23:35:06.637684Z"},"content_sha256":"1c5f5bfeb23731cba3f605697dda13093de74f9e9c95b9589779abe3cfa55ba1","schema_version":"1.0","event_id":"sha256:1c5f5bfeb23731cba3f605697dda13093de74f9e9c95b9589779abe3cfa55ba1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:PRIG6EURCTEO4IWA2Q4HAGL6W5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two Photon Width of eta_c (paper version)","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Giulia Pancheri, Nicola Fabiano","submitted_at":"2002-04-18T09:57:18Z","abstract_excerpt":"We discuss the measured partial width of the pseudoscalar charmonium state eta_c into two photons. Predictions from potential models are examined and compared with experimental values. Including radiative corrections, it is found that present measurements are compatible both with a QCD type potential and with a static Coulomb potential. The latter is then used to give an estimate on the eta_b decay into two photons. Results for eta_c are also compared with those from j/psi data through the NRQCD model."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0204214","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:13:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eH3llhBdu2/U44sG9+q7L2OLAslplfuiJ/aE2TlanZYLs2ioAq/dgQvIU1fJbsMXT8FwVS8zcvzLarJbU5CZAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T23:35:06.638152Z"},"content_sha256":"d3af1460cb6b307e2c0fa32bd5d9fcd9545766ef7f68d0a5f0ae7cec88a1d561","schema_version":"1.0","event_id":"sha256:d3af1460cb6b307e2c0fa32bd5d9fcd9545766ef7f68d0a5f0ae7cec88a1d561"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PRIG6EURCTEO4IWA2Q4HAGL6W5/bundle.json","state_url":"https://pith.science/pith/PRIG6EURCTEO4IWA2Q4HAGL6W5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PRIG6EURCTEO4IWA2Q4HAGL6W5/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":"2026-06-04T23:35:06Z","links":{"resolver":"https://pith.science/pith/PRIG6EURCTEO4IWA2Q4HAGL6W5","bundle":"https://pith.science/pith/PRIG6EURCTEO4IWA2Q4HAGL6W5/bundle.json","state":"https://pith.science/pith/PRIG6EURCTEO4IWA2Q4HAGL6W5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PRIG6EURCTEO4IWA2Q4HAGL6W5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:PRIG6EURCTEO4IWA2Q4HAGL6W5","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":"9010a74d2341ef435a2606b281ed5ef3c8393c516d7ca1b7367e3629e999a39b","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2002-04-18T09:57:18Z","title_canon_sha256":"7aa64b881e1031e358cec69bb73b5b70bf34c5fde0033a3231c432e07ed84842"},"schema_version":"1.0","source":{"id":"hep-ph/0204214","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0204214","created_at":"2026-05-18T04:13:25Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0204214v1","created_at":"2026-05-18T04:13:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0204214","created_at":"2026-05-18T04:13:25Z"},{"alias_kind":"pith_short_12","alias_value":"PRIG6EURCTEO","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"PRIG6EURCTEO4IWA","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"PRIG6EUR","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:d3af1460cb6b307e2c0fa32bd5d9fcd9545766ef7f68d0a5f0ae7cec88a1d561","target":"graph","created_at":"2026-05-18T04:13:25Z","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 discuss the measured partial width of the pseudoscalar charmonium state eta_c into two photons. Predictions from potential models are examined and compared with experimental values. Including radiative corrections, it is found that present measurements are compatible both with a QCD type potential and with a static Coulomb potential. The latter is then used to give an estimate on the eta_b decay into two photons. Results for eta_c are also compared with those from j/psi data through the NRQCD model.","authors_text":"Giulia Pancheri, Nicola Fabiano","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"2002-04-18T09:57:18Z","title":"Two Photon Width of eta_c (paper version)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0204214","kind":"arxiv","version":1},"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":"sha256:1c5f5bfeb23731cba3f605697dda13093de74f9e9c95b9589779abe3cfa55ba1","target":"record","created_at":"2026-05-18T04:13:25Z","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":"9010a74d2341ef435a2606b281ed5ef3c8393c516d7ca1b7367e3629e999a39b","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2002-04-18T09:57:18Z","title_canon_sha256":"7aa64b881e1031e358cec69bb73b5b70bf34c5fde0033a3231c432e07ed84842"},"schema_version":"1.0","source":{"id":"hep-ph/0204214","kind":"arxiv","version":1}},"canonical_sha256":"7c506f129114c8ee22c0d43870197eb75585acec14899696718bd1890ccd0422","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7c506f129114c8ee22c0d43870197eb75585acec14899696718bd1890ccd0422","first_computed_at":"2026-05-18T04:13:25.877074Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:13:25.877074Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j/KYZVVSqCH8SFk8XjN5Fy/aXAyZYYvxyoj27A6bVQw844LaNE3QGtaTH3qNtOMimFea6JciQ3P29S2qUXjDCw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:13:25.877580Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/0204214","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1c5f5bfeb23731cba3f605697dda13093de74f9e9c95b9589779abe3cfa55ba1","sha256:d3af1460cb6b307e2c0fa32bd5d9fcd9545766ef7f68d0a5f0ae7cec88a1d561"],"state_sha256":"25fdaccdcee43e63b26d2a61c0908eb3cfc7ca995e316c881a96e7bc895cd06a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WMR/XdFLXNsG5v+h+QDJEMEy6t78EvpPiCc6G1EWZBd94mlyjg30oGLv+ShN+XFxdkPk3YK3BqhR1qYjWW/aAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T23:35:06.640603Z","bundle_sha256":"2f1d5f7d07baf524bc7808d1b5e6e198f9281c02ab0da0e5a92d28e1e36d168b"}}