{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:M5HAKCGMZ5TEJCJMBAWWDIBVS3","short_pith_number":"pith:M5HAKCGM","canonical_record":{"source":{"id":"2102.10118","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-02-19T19:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"fd18dcf4748abe90052ee67d2ae3e8d85ce18eff4ab6b70e6eecb1f7fa4c57a8","abstract_canon_sha256":"f3d9997b93e14ccc099e21dec908a8117ec35fe193e7329ae27eb583a3249b93"},"schema_version":"1.0"},"canonical_sha256":"674e0508cccf6644892c082d61a03596ef0bca8e3e3511abfaf9a185c1e8f8c6","source":{"kind":"arxiv","id":"2102.10118","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.10118","created_at":"2026-07-05T02:40:32Z"},{"alias_kind":"arxiv_version","alias_value":"2102.10118v2","created_at":"2026-07-05T02:40:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.10118","created_at":"2026-07-05T02:40:32Z"},{"alias_kind":"pith_short_12","alias_value":"M5HAKCGMZ5TE","created_at":"2026-07-05T02:40:32Z"},{"alias_kind":"pith_short_16","alias_value":"M5HAKCGMZ5TEJCJM","created_at":"2026-07-05T02:40:32Z"},{"alias_kind":"pith_short_8","alias_value":"M5HAKCGM","created_at":"2026-07-05T02:40:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:M5HAKCGMZ5TEJCJMBAWWDIBVS3","target":"record","payload":{"canonical_record":{"source":{"id":"2102.10118","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-02-19T19:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"fd18dcf4748abe90052ee67d2ae3e8d85ce18eff4ab6b70e6eecb1f7fa4c57a8","abstract_canon_sha256":"f3d9997b93e14ccc099e21dec908a8117ec35fe193e7329ae27eb583a3249b93"},"schema_version":"1.0"},"canonical_sha256":"674e0508cccf6644892c082d61a03596ef0bca8e3e3511abfaf9a185c1e8f8c6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:40:32.504663Z","signature_b64":"wKMdAU2AZ6pLdD48bKffAyDZ9RLCtUgVN/UhM836LHIQM/hLA6wMMlZ5OdZgjK1thhlqEaPO3m6hjsk1n9LfBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"674e0508cccf6644892c082d61a03596ef0bca8e3e3511abfaf9a185c1e8f8c6","last_reissued_at":"2026-07-05T02:40:32.504193Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:40:32.504193Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2102.10118","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:40:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VrlMbTrPIdhW4MEvtot+tTztnkIAiAscYSvV4GZZHetthXwkjKrkrZaZnYQDtnWH2rsk4qVTF6uRR3oaFS5HDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T08:16:15.335578Z"},"content_sha256":"955fa2861b1a86583a2ce7ae6141e4e7e92c8338e58bbf34ad2ff5371cc03ae3","schema_version":"1.0","event_id":"sha256:955fa2861b1a86583a2ce7ae6141e4e7e92c8338e58bbf34ad2ff5371cc03ae3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:M5HAKCGMZ5TEJCJMBAWWDIBVS3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Challenges for a QCD Axion at the 10 MeV Scale","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Carlos E.M. Wagner, Jia Liu, Navin McGinnis, Xiao-Ping Wang","submitted_at":"2021-02-19T19:00:03Z","abstract_excerpt":"We report on an interesting realization of the QCD axion, with mass in the range $\\mathcal{O}(10)$ MeV. It has previously been shown that although this scenario is stringently constrained from multiple sources, the model remains viable for a range of parameters that leads to an explanation of the Atomki experiment anomaly. In this article we study in more detail the additional constraints proceeding from recent low energy experiments and study the compatibility of the allowed parameter space with the one leading to consistency of the most recent measurements of the electron anomalous magnetic "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.10118","kind":"arxiv","version":2},"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/2102.10118/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":"2026-07-05T02:40:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8TKg213YXqSrPdfaqFgM8B8Uy0RVmhtU4U3/mkAr0AGJvHs51wYG5ZTnRa39/GSw5gkL8AKPwZtL5j8k8ncyBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T08:16:15.336517Z"},"content_sha256":"7ed390ba526f307f8011b617af53b3d52b725329f49efc16bc0a267dae080c6e","schema_version":"1.0","event_id":"sha256:7ed390ba526f307f8011b617af53b3d52b725329f49efc16bc0a267dae080c6e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M5HAKCGMZ5TEJCJMBAWWDIBVS3/bundle.json","state_url":"https://pith.science/pith/M5HAKCGMZ5TEJCJMBAWWDIBVS3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M5HAKCGMZ5TEJCJMBAWWDIBVS3/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":"2026-08-16T08:16:15Z","links":{"resolver":"https://pith.science/pith/M5HAKCGMZ5TEJCJMBAWWDIBVS3","bundle":"https://pith.science/pith/M5HAKCGMZ5TEJCJMBAWWDIBVS3/bundle.json","state":"https://pith.science/pith/M5HAKCGMZ5TEJCJMBAWWDIBVS3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M5HAKCGMZ5TEJCJMBAWWDIBVS3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:M5HAKCGMZ5TEJCJMBAWWDIBVS3","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":"f3d9997b93e14ccc099e21dec908a8117ec35fe193e7329ae27eb583a3249b93","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-02-19T19:00:03Z","title_canon_sha256":"fd18dcf4748abe90052ee67d2ae3e8d85ce18eff4ab6b70e6eecb1f7fa4c57a8"},"schema_version":"1.0","source":{"id":"2102.10118","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.10118","created_at":"2026-07-05T02:40:32Z"},{"alias_kind":"arxiv_version","alias_value":"2102.10118v2","created_at":"2026-07-05T02:40:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.10118","created_at":"2026-07-05T02:40:32Z"},{"alias_kind":"pith_short_12","alias_value":"M5HAKCGMZ5TE","created_at":"2026-07-05T02:40:32Z"},{"alias_kind":"pith_short_16","alias_value":"M5HAKCGMZ5TEJCJM","created_at":"2026-07-05T02:40:32Z"},{"alias_kind":"pith_short_8","alias_value":"M5HAKCGM","created_at":"2026-07-05T02:40:32Z"}],"graph_snapshots":[{"event_id":"sha256:7ed390ba526f307f8011b617af53b3d52b725329f49efc16bc0a267dae080c6e","target":"graph","created_at":"2026-07-05T02:40:32Z","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/2102.10118/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on an interesting realization of the QCD axion, with mass in the range $\\mathcal{O}(10)$ MeV. It has previously been shown that although this scenario is stringently constrained from multiple sources, the model remains viable for a range of parameters that leads to an explanation of the Atomki experiment anomaly. In this article we study in more detail the additional constraints proceeding from recent low energy experiments and study the compatibility of the allowed parameter space with the one leading to consistency of the most recent measurements of the electron anomalous magnetic ","authors_text":"Carlos E.M. Wagner, Jia Liu, Navin McGinnis, Xiao-Ping Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-02-19T19:00:03Z","title":"Challenges for a QCD Axion at the 10 MeV Scale"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.10118","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":"sha256:955fa2861b1a86583a2ce7ae6141e4e7e92c8338e58bbf34ad2ff5371cc03ae3","target":"record","created_at":"2026-07-05T02:40:32Z","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":"f3d9997b93e14ccc099e21dec908a8117ec35fe193e7329ae27eb583a3249b93","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-02-19T19:00:03Z","title_canon_sha256":"fd18dcf4748abe90052ee67d2ae3e8d85ce18eff4ab6b70e6eecb1f7fa4c57a8"},"schema_version":"1.0","source":{"id":"2102.10118","kind":"arxiv","version":2}},"canonical_sha256":"674e0508cccf6644892c082d61a03596ef0bca8e3e3511abfaf9a185c1e8f8c6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"674e0508cccf6644892c082d61a03596ef0bca8e3e3511abfaf9a185c1e8f8c6","first_computed_at":"2026-07-05T02:40:32.504193Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:40:32.504193Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wKMdAU2AZ6pLdD48bKffAyDZ9RLCtUgVN/UhM836LHIQM/hLA6wMMlZ5OdZgjK1thhlqEaPO3m6hjsk1n9LfBw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:40:32.504663Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.10118","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:955fa2861b1a86583a2ce7ae6141e4e7e92c8338e58bbf34ad2ff5371cc03ae3","sha256:7ed390ba526f307f8011b617af53b3d52b725329f49efc16bc0a267dae080c6e"],"state_sha256":"b795b9d606c6c8635ea6f9c4c5322f69000fffd40c1b2e7aef4880a428476a5b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eLBkBpIxoqupx8QSjLaBShOQFkTsFUq4bufS0xoxDviAGkMG0KX2DjDLQO2opWLVAuKfFckSBv36BV9vS+SYBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T08:16:15.343913Z","bundle_sha256":"c551517abc087eed7fea59ebdb82cb7103a227d6484d5e370fd2bf19891c4227"}}