{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:5U2UTUUYV3JRD5MDYOBCT7D5VB","short_pith_number":"pith:5U2UTUUY","canonical_record":{"source":{"id":"2212.02818","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2022-12-06T08:25:46Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"b701c8eb7376a297a1effb2965a36c16d72385d91804429ebc9069f733f05279","abstract_canon_sha256":"62812d2fec1f8a7543a43243a7227da83ddf37aa46904ea0e5c5b7920942669f"},"schema_version":"1.0"},"canonical_sha256":"ed3549d298aed311f583c38229fc7da87d872ad95bdc9301fccbb1c3d5acdeeb","source":{"kind":"arxiv","id":"2212.02818","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.02818","created_at":"2026-07-05T06:28:57Z"},{"alias_kind":"arxiv_version","alias_value":"2212.02818v3","created_at":"2026-07-05T06:28:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.02818","created_at":"2026-07-05T06:28:57Z"},{"alias_kind":"pith_short_12","alias_value":"5U2UTUUYV3JR","created_at":"2026-07-05T06:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"5U2UTUUYV3JRD5MD","created_at":"2026-07-05T06:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"5U2UTUUY","created_at":"2026-07-05T06:28:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:5U2UTUUYV3JRD5MDYOBCT7D5VB","target":"record","payload":{"canonical_record":{"source":{"id":"2212.02818","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2022-12-06T08:25:46Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"b701c8eb7376a297a1effb2965a36c16d72385d91804429ebc9069f733f05279","abstract_canon_sha256":"62812d2fec1f8a7543a43243a7227da83ddf37aa46904ea0e5c5b7920942669f"},"schema_version":"1.0"},"canonical_sha256":"ed3549d298aed311f583c38229fc7da87d872ad95bdc9301fccbb1c3d5acdeeb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:28:57.516433Z","signature_b64":"3BH2Oqqm/yoWBn2ZUy3yr5x3v5ZUqOuu1elqkyTDuUSQcLeMQj5PhKkE8OF7WbHgK1j8rUt3JzcLSRDGskaLBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ed3549d298aed311f583c38229fc7da87d872ad95bdc9301fccbb1c3d5acdeeb","last_reissued_at":"2026-07-05T06:28:57.515935Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:28:57.515935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2212.02818","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:28:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aH1ys6qieNWKo9yxUg2LVc1CpENGGTbc5FOKqykkK83VebEFS4rg1Yvl0y/9m/wsTdwaGfoHp8jVc7cUz2Y/Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T06:51:27.316176Z"},"content_sha256":"f7795354973548e78ca75b97b32b25de9aebd4803c837dafdd105bee00d1548b","schema_version":"1.0","event_id":"sha256:f7795354973548e78ca75b97b32b25de9aebd4803c837dafdd105bee00d1548b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:5U2UTUUYV3JRD5MDYOBCT7D5VB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Testing axion couplings to leptons in $Z$ decays at future $e^+e^-$ colliders","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Lorenzo Calibbi, Shaoyang Qin, Xiaoyue Yin, Yiming Yang, Zijie Huang","submitted_at":"2022-12-06T08:25:46Z","abstract_excerpt":"We study the possibility of probing the existence of a light, invisible, axion-like particle (ALP) $a$ in leptonic decays of the $Z$ boson at the proposed high-energy $e^+e^-$ colliders, CEPC and FCC-ee. Both projects plan to run at the $Z$ pole, collecting $10^{12}-10^{13}$ visible $Z$ decays. We show that, searching for the emission of an invisible ALP from leptons in leptonic $Z$ decays, this enormous statistics could allow to constrain the ALP couplings to leptons at an unprecedented level for laboratory experiments. In particular, within a Monte Carlo simulation framework, we estimate tha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.02818","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2212.02818/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T06:28:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1Z9z0dFMm0OAO2XnU2BJE4J4xkxGMQpHHdQK04Nhmyh8E3VGf5Dl6ih21LA2D1mKrjfhfT+qKrJ1itnb0dUJCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T06:51:27.316563Z"},"content_sha256":"ed29b9bf500555c50ceebab1f2ec3ff013644d109b6743dceb32acc6f1571e1a","schema_version":"1.0","event_id":"sha256:ed29b9bf500555c50ceebab1f2ec3ff013644d109b6743dceb32acc6f1571e1a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5U2UTUUYV3JRD5MDYOBCT7D5VB/bundle.json","state_url":"https://pith.science/pith/5U2UTUUYV3JRD5MDYOBCT7D5VB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5U2UTUUYV3JRD5MDYOBCT7D5VB/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":"2026-07-07T06:51:27Z","links":{"resolver":"https://pith.science/pith/5U2UTUUYV3JRD5MDYOBCT7D5VB","bundle":"https://pith.science/pith/5U2UTUUYV3JRD5MDYOBCT7D5VB/bundle.json","state":"https://pith.science/pith/5U2UTUUYV3JRD5MDYOBCT7D5VB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5U2UTUUYV3JRD5MDYOBCT7D5VB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:5U2UTUUYV3JRD5MDYOBCT7D5VB","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":"62812d2fec1f8a7543a43243a7227da83ddf37aa46904ea0e5c5b7920942669f","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2022-12-06T08:25:46Z","title_canon_sha256":"b701c8eb7376a297a1effb2965a36c16d72385d91804429ebc9069f733f05279"},"schema_version":"1.0","source":{"id":"2212.02818","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.02818","created_at":"2026-07-05T06:28:57Z"},{"alias_kind":"arxiv_version","alias_value":"2212.02818v3","created_at":"2026-07-05T06:28:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.02818","created_at":"2026-07-05T06:28:57Z"},{"alias_kind":"pith_short_12","alias_value":"5U2UTUUYV3JR","created_at":"2026-07-05T06:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"5U2UTUUYV3JRD5MD","created_at":"2026-07-05T06:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"5U2UTUUY","created_at":"2026-07-05T06:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:ed29b9bf500555c50ceebab1f2ec3ff013644d109b6743dceb32acc6f1571e1a","target":"graph","created_at":"2026-07-05T06:28:57Z","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/2212.02818/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the possibility of probing the existence of a light, invisible, axion-like particle (ALP) $a$ in leptonic decays of the $Z$ boson at the proposed high-energy $e^+e^-$ colliders, CEPC and FCC-ee. Both projects plan to run at the $Z$ pole, collecting $10^{12}-10^{13}$ visible $Z$ decays. We show that, searching for the emission of an invisible ALP from leptons in leptonic $Z$ decays, this enormous statistics could allow to constrain the ALP couplings to leptons at an unprecedented level for laboratory experiments. In particular, within a Monte Carlo simulation framework, we estimate tha","authors_text":"Lorenzo Calibbi, Shaoyang Qin, Xiaoyue Yin, Yiming Yang, Zijie Huang","cross_cats":["hep-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2022-12-06T08:25:46Z","title":"Testing axion couplings to leptons in $Z$ decays at future $e^+e^-$ colliders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.02818","kind":"arxiv","version":3},"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:f7795354973548e78ca75b97b32b25de9aebd4803c837dafdd105bee00d1548b","target":"record","created_at":"2026-07-05T06:28:57Z","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":"62812d2fec1f8a7543a43243a7227da83ddf37aa46904ea0e5c5b7920942669f","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2022-12-06T08:25:46Z","title_canon_sha256":"b701c8eb7376a297a1effb2965a36c16d72385d91804429ebc9069f733f05279"},"schema_version":"1.0","source":{"id":"2212.02818","kind":"arxiv","version":3}},"canonical_sha256":"ed3549d298aed311f583c38229fc7da87d872ad95bdc9301fccbb1c3d5acdeeb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ed3549d298aed311f583c38229fc7da87d872ad95bdc9301fccbb1c3d5acdeeb","first_computed_at":"2026-07-05T06:28:57.515935Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:28:57.515935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3BH2Oqqm/yoWBn2ZUy3yr5x3v5ZUqOuu1elqkyTDuUSQcLeMQj5PhKkE8OF7WbHgK1j8rUt3JzcLSRDGskaLBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:28:57.516433Z","signed_message":"canonical_sha256_bytes"},"source_id":"2212.02818","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f7795354973548e78ca75b97b32b25de9aebd4803c837dafdd105bee00d1548b","sha256:ed29b9bf500555c50ceebab1f2ec3ff013644d109b6743dceb32acc6f1571e1a"],"state_sha256":"c5e3163c74bbde836933e695e1ccdff987ee3061b8d7a376c6554bafe4bd90ad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"68nC8vkG+rzy7+23DklKjS2AQG3wGzE4lyEbYXXdSOsK4Ad44JE/dSGHyAKrBhf1bidcvFXivxW2/w36BJNLBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T06:51:27.319228Z","bundle_sha256":"a3a94b6392d491c687afea7830f2a3f3880824384e939b3b0b40f9c63829ed40"}}