{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:HUF3FQHAE54XDOFYOINFFOMPD6","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":"3287973cc6d885e56a58b1aadef70a96068007688e097cc1c47aafa98cd4ad81","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2012-10-15T07:38:44Z","title_canon_sha256":"79286bb0f49a6628fcbff06dd2f4af5aab54e2d319d7052f2243cdcc089384bb"},"schema_version":"1.0","source":{"id":"1210.3927","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.3927","created_at":"2026-05-18T01:53:55Z"},{"alias_kind":"arxiv_version","alias_value":"1210.3927v2","created_at":"2026-05-18T01:53:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.3927","created_at":"2026-05-18T01:53:55Z"},{"alias_kind":"pith_short_12","alias_value":"HUF3FQHAE54X","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"HUF3FQHAE54XDOFY","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"HUF3FQHA","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:bd434b9d2e6b872d0813664bbf050b962c005a2d38c60bb0da972bad75d9b321","target":"graph","created_at":"2026-05-18T01:53:55Z","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 a new limit on the production of a light dark-force mediator with the KLOE detector at DAPHNE. This boson, called U, has been searched for in the decay phi --> eta U, U --> e+ e-, analyzing the decay eta --> pi0 pi0 pi0 in a data sample of 1.7 fb-1. No structures are observed in the e+e- invariant mass distribution over the background. This search is combined with a previous result obtained from the decay eta --> pi+ pi- pi0, increasing the sensitivity. We set an upper limit at 90% C.L. on the ratio between the U boson coupling constant and the fine structure constant of alpha'/alph","authors_text":"A. Budano, A. De Santis, A. Di Domenico, A. Fantini, A. Kupsc, A. Passeri, A. Ranieri, B. Hoistad, B. Leverington, B. Sciascia, C. Bini, C. Bloise, C. Di Donato, C. F. Redmer, C. Taccini, D. Badoni, D.Domenici, D. Moricciani, E. Czerwinski, E. Dane, E. De Lucia, E.Graziani, F. Bossi, F. Ceradini, F. Gonnella, F. Happacher, F. Loddo, F. Nguyen, G. Bencivenni, G. Capon, G. De Robertis, G. Fanizzi, G. Felici, G. Giardina, G. Mandaglio, G. Morello, G. Venanzoni, I. Balwierz-Pytko, I. Prado Longhi, I. Sarra, J. Lee-Franzini, J. Zdebik, KLOE-2 Collaboration: D. Babusci, L. Caldeira Balkestaahl, L. Heijkenskj, L. Iafolla, L. Tortora, M. Jacewicz, M. Martemianov, M. Martini, M. Mascolo, M. Schioppa, M. Silarski, M. Wolke, O. Erriquez, P. Branchini, P. Ciambrone, P. Franzini, P. Gauzzi, P. Moskal, P. Santangelo, R. Di Salvo, R. Messi, S. Fiore, S. Giovannella, S. Loffredo, S. Miscetti, T. Johansson, V. Patera, W. Wislicki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2012-10-15T07:38:44Z","title":"Limit on the production of a light vector gauge boson in phi meson decays with the KLOE detector"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.3927","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":"sha256:2cb210623857dd7f9e827b17d7b7dd6b34c02c46a7979ba9c14db80b4528ad9f","target":"record","created_at":"2026-05-18T01:53:55Z","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":"3287973cc6d885e56a58b1aadef70a96068007688e097cc1c47aafa98cd4ad81","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2012-10-15T07:38:44Z","title_canon_sha256":"79286bb0f49a6628fcbff06dd2f4af5aab54e2d319d7052f2243cdcc089384bb"},"schema_version":"1.0","source":{"id":"1210.3927","kind":"arxiv","version":2}},"canonical_sha256":"3d0bb2c0e0277971b8b8721a52b98f1fb851ef6ec9b200433879168d25f24a53","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d0bb2c0e0277971b8b8721a52b98f1fb851ef6ec9b200433879168d25f24a53","first_computed_at":"2026-05-18T01:53:55.401857Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:55.401857Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mqLYkkMN2CLcVx2rWZYCHX7uZ9RYSR/OU/BDYSWYZV+a9E9+7jTGX8wSBi7wijnGcjUja535WgSS7uDG8RN5Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:55.402494Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.3927","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2cb210623857dd7f9e827b17d7b7dd6b34c02c46a7979ba9c14db80b4528ad9f","sha256:bd434b9d2e6b872d0813664bbf050b962c005a2d38c60bb0da972bad75d9b321"],"state_sha256":"e17aad23c06e33166336c02820aeeb1a341927b96af8b14177fe48901e46a931"}