{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:5ZD5BJYP6QM3Y6RLSXYOCDBZUA","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":"f5956a9fa32ceb61fdaefb335347f4588f7e8331733290a63e574f866671ad79","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2014-04-30T16:00:07Z","title_canon_sha256":"62803b86a0eeb45eac82e767ecc86b8aa9bb3a0da3a6e5e6a24b04c51c8662ae"},"schema_version":"1.0","source":{"id":"1404.7772","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.7772","created_at":"2026-05-18T02:44:30Z"},{"alias_kind":"arxiv_version","alias_value":"1404.7772v2","created_at":"2026-05-18T02:44:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.7772","created_at":"2026-05-18T02:44:30Z"},{"alias_kind":"pith_short_12","alias_value":"5ZD5BJYP6QM3","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"5ZD5BJYP6QM3Y6RL","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"5ZD5BJYP","created_at":"2026-05-18T12:28:16Z"}],"graph_snapshots":[{"event_id":"sha256:760d8e3ac0df4e7d137d7659491a841e88668411ec823d78f74901fa886ec248","target":"graph","created_at":"2026-05-18T02:44:30Z","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 have searched for a light vector boson $U$, the possible carrier of a \"dark force\", with the KLOE detector at the DA$\\Phi$NE \\epm\\ collider, motivated by astrophysical evidence for the presence of dark matter in the universe. Using \\epm\\ collisions collected with an integrated luminosity of $239.3$~pb$^{-1}$, we look for a dimuon mass peak in the reaction \\epm\\to$\\mu^+ \\mu^-$\\gam, corresponding to the decay $U\\to\\mu^+\\mu^-$. We find no evidence for a $U$ vector boson signal. We set a 90\\% CL upper limit for the mixing parameter squared between the photon and the $U$ boson of 1.6$\\times$10$^","authors_text":"A. Budano, A. De Santis, A. Di Cicco, A. Di Domenico, A. Fantini, A. Gajos, A. Kupsc, A. Palladino, A. Passeri, A. Ranieri, B. Hoistad, B. Sciascia, C. Bloise, D. Babusci, D. Domenici, D. Kaminska, D. Moricciani, E. Czerwinski, E. Dan\\`e, E. De Lucia, E. Graziani, F. Bossi, F. Ceradini, F. Curciarello, F. Happacher, F. Loddo, F. Nguyen, G. Bencivenni, 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), K. Kacprzak, L. Caldeira Balkest\\r{a}hl, L. Heijkenskjold, L. Tortora, M. Martemianov, M. Martini, M. Mascolo, M. Schioppa, M. Silarski, M. Wolke, O. Erriquez, P. Branchini, P. Ciambrone, P. De Simone, P. Franzini, P. Gauzzi, P. Moskal, P. Santangelo, R. Di Salvo, R. Messi, S. Fiore, S. Giovannella, S. Loffredo, S. Miscetti, T. Johansson, V. De Leo, V. Patera, W. Krzemien, W. Wislicki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2014-04-30T16:00:07Z","title":"Search for light vector boson production in $e^+e^- \\rightarrow \\mu^+ \\mu^- \\gamma$ interactions with the KLOE experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.7772","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:d6ed44b5744b6eccb8442bbf5abd25d5c3aabc94a680f55a647a2bb03669c36a","target":"record","created_at":"2026-05-18T02:44:30Z","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":"f5956a9fa32ceb61fdaefb335347f4588f7e8331733290a63e574f866671ad79","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2014-04-30T16:00:07Z","title_canon_sha256":"62803b86a0eeb45eac82e767ecc86b8aa9bb3a0da3a6e5e6a24b04c51c8662ae"},"schema_version":"1.0","source":{"id":"1404.7772","kind":"arxiv","version":2}},"canonical_sha256":"ee47d0a70ff419bc7a2b95f0e10c39a028df519ac48901c1de4008eb9cdef667","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ee47d0a70ff419bc7a2b95f0e10c39a028df519ac48901c1de4008eb9cdef667","first_computed_at":"2026-05-18T02:44:30.926479Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:44:30.926479Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CMFm6E/GbEMpyzJ7PGfIS/JLOZZK0q5yC8cptAFSH05RlAcmKEJzgXPTfECKYYIQUfcu1NFieTiPrsuJn0geDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:44:30.927038Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.7772","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d6ed44b5744b6eccb8442bbf5abd25d5c3aabc94a680f55a647a2bb03669c36a","sha256:760d8e3ac0df4e7d137d7659491a841e88668411ec823d78f74901fa886ec248"],"state_sha256":"d973a48904300f63714929bbd95a8418dfb7c34587d619072ec4900e0c17079b"}