{"as_of":"2026-08-09T11:09:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:3e1bed60489ea3a3290549361dd59ac6551f3b156a02ee79266d560ac3b3d1d6","coverage":[{"denominator":92,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":92,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-08T23:48:55.574443Z","state":"measured"},{"denominator":92,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":92,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-09T06:31:02.800959+00:00","state":"measured"},{"denominator":0,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"cited_works","source_observed_at":null,"state":"measured"}],"external_citation_measurements":[],"inbound":[],"links":{"evidence":"/evidence","html":"/paper/2502.04060/citation-record","integrity":"/paper/2502.04060/integrity","json":"/paper/2502.04060/citation-record.json","paper":"/paper/2502.04060"},"outbound":[{"citation":{"cited_paper":{"arxiv_id":"1112.4809","last_updated":"2013-07-02T20:05:37Z","snapshot_observed_at":"2026-07-06T02:39:47.548807Z","submitted_at":"2011-12-20T19:46:21Z","title":"Neutral Pion Lifetime Measurements and the QCD Chiral Anomaly","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1112.4809","snapshot_observed_at":"2026-08-08T23:48:55.160302Z","title":"Neutral Pion Lifetime Measurements and the QCD Chiral Anomaly,","venue":null,"work_id":null,"year":2013},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":1,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.160302Z"},"links":{"cited_paper":"/paper/1112.4809","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:4ae4c91a75df874f0b8a35d176983883c92d4a328d4ee87b986fd25214f0df88","observation_id":"3c20cd46-0ade-4010-9f21-0724d99a2121","resolution":{"observed_at":"2026-08-08T23:48:55.160302Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:55.165523Z","title":"Pions: the original Nambu–Goldstone bosons: An introduction and precision pion physics,","venue":null,"work_id":null,"year":2022},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":2,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.165523Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:4f76827da893537302c3d7bdbc809d71873d5d95aa07caf028e19ca8ffd007e9","observation_id":"a3fd6e14-9562-49ba-bff8-f7c711235281","resolution":{"observed_at":"2026-08-08T23:48:55.165523Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2212.11107","last_updated":"2022-12-26T17:55:35Z","snapshot_observed_at":"2026-07-06T14:33:35.900186Z","submitted_at":"2022-12-21T15:47:35Z","title":"50 Years of Quantum Chromodynamics","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2212.11107","snapshot_observed_at":"2026-08-08T23:48:55.170205Z","title":"50 Years of Quantum Chromodynam- ics,","venue":null,"work_id":null,"year":2023},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":3,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.170205Z"},"links":{"cited_paper":"/paper/2212.11107","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:2564fd21e06788f78f5d7bb39bcd27e855e59c071bd63066b31637fdc84d60c6","observation_id":"6fde0ce6-897b-4c69-93ad-c2e19875b701","resolution":{"observed_at":"2026-08-08T23:48:55.170205Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:55.174745Z","title":"Re- view of Particle Physics,","venue":null,"work_id":null,"year":2022},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":4,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.174745Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:806d3530f2b2fdb9c3874a1fe3cf6c2a4d70bd7a03a6ad6c5424e0a6e5caf8a4","observation_id":"d270b736-e405-4533-9a2c-6a71112de447","resolution":{"observed_at":"2026-08-08T23:48:55.174745Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:55.178536Z","title":"A New Light Boson?","venue":null,"work_id":null,"year":1978},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":5,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.178536Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:1965208296a893bdd3b233a540154a993b0e917043588162158218b906ce63f5","observation_id":"747996d2-2554-4dc5-b705-1748b30198d8","resolution":{"observed_at":"2026-08-08T23:48:55.178536Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:55.182888Z","title":"Problem of Strong P and T Invariance in the Presence of Instantons,","venue":null,"work_id":null,"year":1978},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":6,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.182888Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:2a794b23805ddbc8336bfe3341112d9e403691b809639c915eb9c3f8c4c1ca13","observation_id":"c53bb1c5-e4be-4d8c-803f-289672a92d61","resolution":{"observed_at":"2026-08-08T23:48:55.182888Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:55.187734Z","title":"Opening the Axion Window,","venue":null,"work_id":null,"year":1985},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":7,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.187734Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:d9223ad7d660771f2bafda7c18ec1ae6e7f6fa30bb9cde46d5a0c9a0734b44e6","observation_id":"fe4efc51-153e-415a-b80b-d9464b9ed073","resolution":{"observed_at":"2026-08-08T23:48:55.187734Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1811.05466","last_updated":"2018-11-12T19:00:00Z","snapshot_observed_at":"2026-07-06T07:14:31.358596Z","submitted_at":"2018-11-12T19:00:00Z","title":"Axion couplings to electroweak gauge bosons","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1811.05466","snapshot_observed_at":"2026-08-08T23:48:55.191727Z","title":"Axion couplings to electroweak gauge bosons,","venue":null,"work_id":null,"year":2019},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":8,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.191727Z"},"links":{"cited_paper":"/paper/1811.05466","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:20ff1f73dfecb26cb2cede106ecf165d6136e9e5462eeeb11d01d6ff7c6bd237","observation_id":"7839b5bd-3937-49cf-aed9-c4b6ff6f0576","resolution":{"observed_at":"2026-08-08T23:48:55.191727Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:55.196123Z","title":"Cp conservation in the presence of instantons,","venue":null,"work_id":null,"year":1977},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":9,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.196123Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:7e07a631ddf26f4bbf250c0614c24e178f7bbea0a62b0b11963a87fbe237df6c","observation_id":"4acdc35e-68f7-453a-af5e-b2b858b968dc","resolution":{"observed_at":"2026-08-08T23:48:55.196123Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:55.200114Z","title":"Constraints Imposed by CP Conservation in the Presence of Instantons,","venue":null,"work_id":null,"year":1977},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":10,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.200114Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:2e108186c65fe4b51c0e00848a8a106ab1403c5f4625c7717814661b4dc1bd94","observation_id":"5ddbcb35-b22c-4add-a69a-ee764b39ffd6","resolution":{"observed_at":"2026-08-08T23:48:55.200114Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:55.204454Z","title":"A Simple Solution to the Strong CP Problem with a Harm- less Axion,","venue":null,"work_id":null,"year":1981},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":11,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.204454Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:1c3b3bf0fff50e134770e03041e59c44f373697dede95d0a2786ee8b07052b5f","observation_id":"e9c17eb2-17dd-4499-853b-adddde1e867e","resolution":{"observed_at":"2026-08-08T23:48:55.204454Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:55.208872Z","title":"On Possible Suppression of the Axion Hadron Interactions. (In Russian),","venue":null,"work_id":null,"year":1980},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":12,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.208872Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:7537886c8ed61369dcb6821c093fba9f14eafcab80f82fdb0a5fb9b99bf684a7","observation_id":"a857b058-271b-4d5a-af9d-cfd0a5ca2ce8","resolution":{"observed_at":"2026-08-08T23:48:55.208872Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:55.212511Z","title":"Weak Interaction Singlet and Strong CP Invariance,","venue":null,"work_id":null,"year":1979},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":13,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.212511Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:7df0a2f206827fc5ce03b52edb8488b3d18b78d33fab7622d3cb8158004bd0e1","observation_id":"e7b23a7f-84c5-4285-a3d7-cad99ac6a85a","resolution":{"observed_at":"2026-08-08T23:48:55.212511Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:55.216485Z","title":"Can Confinement Ensure Natural CP Invari- ance of Strong Interactions?","venue":null,"work_id":null,"year":1980},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":14,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.216485Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:32fa109f6dd14ebdd07e457cf18cb2c0734358233cd55e113081500358c20395","observation_id":"f629d1ef-7e33-4d74-bd43-bef88f655cbf","resolution":{"observed_at":"2026-08-08T23:48:55.216485Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:55.220633Z","title":"Cos- mology of the Invisible Axion,","venue":null,"work_id":null,"year":1983},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":15,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.220633Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:08cf8be9edff18e5de0bc3903b26849497b65759829db994efb6018f384f2616","observation_id":"bbe17f8b-bd30-4e54-99ee-3e0191eed617","resolution":{"observed_at":"2026-08-08T23:48:55.220633Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2305.01715","last_updated":"2023-05-02T18:27:28Z","snapshot_observed_at":"2026-08-01T14:07:57.611839Z","submitted_at":"2023-05-02T18:27:28Z","title":"Feebly Interacting Particles: FIPs 2022 workshop report","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2305.01715","snapshot_observed_at":"2026-08-08T23:48:55.224689Z","title":"Feebly-interacting particles: FIPs 2022 Workshop Report,","venue":null,"work_id":null,"year":2023},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":16,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.224689Z"},"links":{"cited_paper":"/paper/2305.01715","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:491b18b444c2f6ebb9d7881a658dae17bb28440392dac463dd02cbfb5dbf1c7c","observation_id":"ad184e56-1823-457d-9550-8f25555f6e9c","resolution":{"observed_at":"2026-08-08T23:48:55.224689Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:57.052182Z","title":"Mi- crowave cavity searches for dark-matter axions,","venue":null,"work_id":"669c2505-16f7-48a7-afad-ee0dd5b37293","year":2003},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":17,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.229023Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:c6e02ee3b74ba372e637fd181278a0cab7947307a027a97cc1ac1bf48eaf9d73","observation_id":"e36bc47d-e9ea-40d2-ac4a-270b2e906eb4","resolution":{"observed_at":"2026-08-08T23:48:57.056582Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1002.0329","last_updated":"2010-02-01T21:00:07Z","snapshot_observed_at":"2026-07-06T02:02:48.064016Z","submitted_at":"2010-02-01T21:00:07Z","title":"The Low-Energy Frontier of Particle Physics","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1002.0329","snapshot_observed_at":"2026-08-08T23:48:55.232966Z","title":"The Low-Energy Frontier of Particle Physics,","venue":null,"work_id":null,"year":2010},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":18,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.232966Z"},"links":{"cited_paper":"/paper/1002.0329","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:c3d3bea3000615edd1de7207fe2bb5530cdde8125dde5bdc5c37cdc0f67da040","observation_id":"a6d5fcc9-beda-4678-adf7-6ae3373af86b","resolution":{"observed_at":"2026-08-08T23:48:55.232966Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1210.5081","last_updated":"2012-10-31T10:26:41Z","snapshot_observed_at":"2026-07-06T02:57:57.703235Z","submitted_at":"2012-10-18T10:22:17Z","title":"Exploring the Role of Axions and Other WISPs in the Dark Universe","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1210.5081","snapshot_observed_at":"2026-08-08T23:48:55.237642Z","title":"Exploring the Role of Axions and Other WISPs in the Dark Universe,","venue":null,"work_id":null,"year":2012},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":19,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.237642Z"},"links":{"cited_paper":"/paper/1210.5081","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:864d4bd89ff3321c83a4481d53c27adf446689ba0f74859f8813822705af94cc","observation_id":"b5505106-1596-445f-90b6-35e949498213","resolution":{"observed_at":"2026-08-08T23:48:55.237642Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1602.00039","last_updated":"2016-01-29T23:42:39Z","snapshot_observed_at":"2026-07-06T04:44:32.331171Z","submitted_at":"2016-01-29T23:42:39Z","title":"Experimental Searches for the Axion and Axion-like Particles","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1602.00039","snapshot_observed_at":"2026-08-08T23:48:55.243382Z","title":"Ex- perimental Searches for the Axion and Axion-Like Par- ticles,","venue":null,"work_id":null,"year":2015},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":20,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.243382Z"},"links":{"cited_paper":"/paper/1602.00039","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:41b899e7f82b035ac969cda22d90e3319465249f012eb0b19b21648ac05f02ca","observation_id":"c01fb2f1-5683-41f7-b002-6b9d2bf9de39","resolution":{"observed_at":"2026-08-08T23:48:55.243382Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2003.02206","last_updated":"2020-10-09T15:06:43Z","snapshot_observed_at":"2026-08-06T13:06:26.262005Z","submitted_at":"2020-03-04T17:23:17Z","title":"Invisible Axion Search Methods","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2003.02206","snapshot_observed_at":"2026-08-08T23:48:55.248264Z","title":"Invisible Axion Search Methods,","venue":null,"work_id":null,"year":2021},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":21,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.248264Z"},"links":{"cited_paper":"/paper/2003.02206","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:f4216876c3614ebfb683e4d9ba3a12e82d65410cfd898d420c72db7180b864e3","observation_id":"f7f38da9-8da3-4c8c-859e-2dbfa74cedd9","resolution":{"observed_at":"2026-08-08T23:48:55.248264Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2311.16453","last_updated":"2023-11-28T03:21:28Z","snapshot_observed_at":"2026-08-04T00:38:42.735728Z","submitted_at":"2023-11-28T03:21:28Z","title":"A Review of Axion Lasing in Astrophysics","version":1},"cited_work":{"arxiv_id":"2311.16453","doi":null,"metadata_source":"pith","pith_arxiv_id":"2311.16453","snapshot_observed_at":"2026-08-08T23:48:56.737219Z","title":"A Review of Axion Lasing in Astrophysics","venue":"hep-ph","work_id":"7114a2fa-c441-47d3-9a58-ca57b58a665b","year":2023},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":22,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.253157Z"},"links":{"cited_paper":"/paper/2311.16453","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:ae482d4034383392e7e86c680988a1f0d78d61cfe263bd6033a4aaee029e2f35","observation_id":"4f496db9-f256-4b11-8818-ac73bb94884f","resolution":{"observed_at":"2026-08-08T23:48:56.742186Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2104.14831","last_updated":"2021-10-27T01:19:24Z","snapshot_observed_at":"2026-08-08T08:10:02.178521Z","submitted_at":"2021-04-30T08:25:07Z","title":"Axion Dark Matter: How to see it?","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2104.14831","snapshot_observed_at":"2026-08-08T23:48:55.258133Z","title":"Axion dark matter: How to see it?","venue":null,"work_id":null,"year":2022},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":23,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.258133Z"},"links":{"cited_paper":"/paper/2104.14831","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:98a662935207f3d87c46395d09e105cae204ea3ab5308fc4a887eee70966b146","observation_id":"7f28087e-75f8-4e63-bd71-dacd3e77d5d5","resolution":{"observed_at":"2026-08-08T23:48:55.258133Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1511.02867","last_updated":"2016-01-08T17:28:37Z","snapshot_observed_at":"2026-08-07T04:03:10.515257Z","submitted_at":"2015-11-09T21:00:03Z","title":"The QCD axion, precisely","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1511.02867","snapshot_observed_at":"2026-08-08T23:48:55.262855Z","title":"The QCD ax- ion, precisely,","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":24,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.262855Z"},"links":{"cited_paper":"/paper/1511.02867","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:2fc33a0aaa64caae864a7bac4a58f4ff35866aa79a6030473b5c8093d26ce04e","observation_id":"afa9203f-a968-47ac-8359-f1a5981b2c70","resolution":{"observed_at":"2026-08-08T23:48:55.262855Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2003.01625","last_updated":"2020-04-30T13:53:29Z","snapshot_observed_at":"2026-08-05T18:02:11.348379Z","submitted_at":"2020-03-03T16:37:47Z","title":"QCD $\\theta$-vacuum energy and axion properties","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2003.01625","snapshot_observed_at":"2026-08-08T23:48:55.268178Z","title":"QCD θ-vacuum en- ergy and axion properties,","venue":null,"work_id":null,"year":2020},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":25,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.268178Z"},"links":{"cited_paper":"/paper/2003.01625","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:5e7ba2e2f2ad7948ad4ff3431c3f3f99c27605a8154086400d501ae14d9fd88a","observation_id":"8740e897-412d-4224-8640-bb51e033c09b","resolution":{"observed_at":"2026-08-08T23:48:55.268178Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"0807.3125","last_updated":"2009-03-03T09:20:56Z","snapshot_observed_at":"2026-08-08T06:16:56.102645Z","submitted_at":"2008-07-20T23:57:10Z","title":"Axions and the Strong CP Problem","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"0807.3125","snapshot_observed_at":"2026-08-08T23:48:55.272978Z","title":"Axions and the Strong CP Problem,","venue":null,"work_id":null,"year":2010},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":26,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.272978Z"},"links":{"cited_paper":"/paper/0807.3125","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:be9673b3dc3fadb5c0bc33d7686cb5937833e5d9b051d5de7602953d56d38075","observation_id":"d5eb8a1c-5ec9-4749-a1e9-79e1ac99404b","resolution":{"observed_at":"2026-08-08T23:48:55.272978Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1510.07633","last_updated":"2016-06-15T09:26:10Z","snapshot_observed_at":"2026-07-06T04:34:18.606343Z","submitted_at":"2015-10-26T20:14:39Z","title":"Axion Cosmology","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1510.07633","snapshot_observed_at":"2026-08-08T23:48:55.278786Z","title":"Axion Cosmology,","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":27,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.278786Z"},"links":{"cited_paper":"/paper/1510.07633","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:9702655093c7f123d3b2b5ac4ea7af72ac189e97c34ab714c7c6a63a2656193a","observation_id":"fe3a0dd7-40d4-486c-ad4e-47fd9f751cd9","resolution":{"observed_at":"2026-08-08T23:48:55.278786Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2003.01100","last_updated":"2022-06-07T13:23:26Z","snapshot_observed_at":"2026-07-06T09:01:38.630614Z","submitted_at":"2020-03-02T18:51:00Z","title":"The landscape of QCD axion models","version":4},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2003.01100","snapshot_observed_at":"2026-08-08T23:48:55.283851Z","title":"The landscape of QCD axion models,","venue":null,"work_id":null,"year":2020},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":28,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.283851Z"},"links":{"cited_paper":"/paper/2003.01100","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:02e3e73338c36eed46a9d983f19704bbf347cd64459ced125eefa13d85f95b62","observation_id":"f7656dfe-e37f-4c9d-b35d-7dd6d1a8f108","resolution":{"observed_at":"2026-08-08T23:48:55.283851Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:57.039206Z","title":"Precision measurement of the neutral pion lifetime,","venue":null,"work_id":"90872ec8-1312-4e4c-996f-ac4fd58ea72d","year":2020},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":29,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.288423Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:c09a85281238b2bc5fc17fe3d1a5494233643378843c88d520ff661e3357b3f2","observation_id":"35b5de50-7178-4d10-b2df-6de197206a1f","resolution":{"observed_at":"2026-08-08T23:48:57.043564Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1206.1375","last_updated":"2012-10-13T04:32:31Z","snapshot_observed_at":"2026-07-06T02:49:28.484501Z","submitted_at":"2012-06-07T00:23:51Z","title":"Two-photon decay of the neutral pion in lattice QCD","version":2},"cited_work":{"arxiv_id":"1206.1375","doi":null,"metadata_source":"pith","pith_arxiv_id":"1206.1375","snapshot_observed_at":"2026-08-08T23:48:56.637291Z","title":"Two-photon decay of the neutral pion in lattice QCD","venue":"hep-lat","work_id":"53fafe79-d7f2-432e-869c-519014a7c074","year":2012},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":30,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.292950Z"},"links":{"cited_paper":"/paper/1206.1375","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:e320308119025c3481d79456684d6ca5c43f9f3972adab520e69b9310005c875","observation_id":"b4b54008-2d32-4002-81e3-ecf03bed6fe6","resolution":{"observed_at":"2026-08-08T23:48:56.641861Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:57.026085Z","title":"Pseudoscalar decays into photon-photon in chiral per- turbation theory,","venue":null,"work_id":"6cf74243-9c84-47cf-a441-0a21812305f7","year":1988},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":31,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.298094Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:381c78b94637667c7f121a07f820d0f20734fa030334614d1a900307e360d613","observation_id":"d0987033-d540-477c-b5dd-f208a4145f57","resolution":{"observed_at":"2026-08-08T23:48:57.030413Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"hep-ph/9407402","last_updated":"1995-03-23T13:44:26Z","snapshot_observed_at":"2026-07-07T04:17:51.194666Z","submitted_at":"1994-07-29T16:32:01Z","title":"Chiral Sum-Rules for ${\\cal L}^{WZ}_{(6)}$ Parameters and Application to $\\pi^0,\\eta,\\eta'$ Decays","version":2},"cited_work":{"arxiv_id":"hep-ph/9407402","doi":null,"metadata_source":"pith","pith_arxiv_id":"hep-ph/9407402","snapshot_observed_at":"2026-08-08T23:48:56.617168Z","title":"Chiral Sum-Rules for ${\\cal L}^{WZ}_{(6)}$ Parameters and Application to $\\pi^0,\\eta,\\eta'$ Decays","venue":"hep-ph","work_id":"646f8074-e679-4a59-9655-0e107f9b12dd","year":1994},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":32,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.302655Z"},"links":{"cited_paper":"/paper/hep-ph/9407402","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:291152bd3f3f613d8e82d5bf3dd44438f3c771f659d7afa6f42beaba98faea35","observation_id":"3dcc5cb8-87c0-4329-9766-376fea8a5ac0","resolution":{"observed_at":"2026-08-08T23:48:56.621781Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"ph/0206007","doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:56.596280Z","title":"De- cay π0 → γγ to next to leading order in chiral perturba- tion theory,","venue":null,"work_id":"d583501d-e429-4e0d-b5a9-d4e2f54e3c68","year":2002},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":33,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.307333Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:4bcb4d0877d3f56a6c3401321b32b4010ffdcd008ab41abc4906743dde9c8c6c","observation_id":"5c14bc1f-077d-4516-ab73-5f502ac61440","resolution":{"observed_at":"2026-08-08T23:48:56.603222Z","resolver_source":"raw_fallback","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"hep-ph/0309011","last_updated":"2003-10-20T13:25:30Z","snapshot_observed_at":"2026-07-07T04:01:05.700702Z","submitted_at":"2003-09-01T14:57:00Z","title":"Two-photon decays of pi^0, eta and eta-prime","version":2},"cited_work":{"arxiv_id":"hep-ph/0309011","doi":null,"metadata_source":"pith","pith_arxiv_id":"hep-ph/0309011","snapshot_observed_at":"2026-08-08T23:48:56.521563Z","title":"Two-photon decays of pi^0, eta and eta-prime","venue":"hep-ph","work_id":"8cbdc476-9fa9-47bb-83a3-9816814f2be7","year":2003},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":34,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.312442Z"},"links":{"cited_paper":"/paper/hep-ph/0309011","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:9f375bff1d348214289a91696ef6cc768f65948ebb580dba33450d07383a45db","observation_id":"df356058-1e0e-4472-957f-ae33bdced65b","resolution":{"observed_at":"2026-08-08T23:48:56.526429Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:57.012247Z","title":"Two photon decay of the pseudoscalars, the chiral symmetry breaking corrections,","venue":null,"work_id":"5ca63ff7-8ce3-45a9-9936-74d7459c5d46","year":2002},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":35,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.317261Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:aa2eb47fe8760a4a380e9f0cd01bb25bdaa4d222823f7acccb900850d0275a5b","observation_id":"708cdaf0-3984-43f3-ad9f-876c89261edf","resolution":{"observed_at":"2026-08-08T23:48:57.016878Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:56.998745Z","title":"Neutral pseudoscalar meson decays: π0 → γγ and η → γγ in su(3) limit,","venue":null,"work_id":"ca76054d-0003-41c8-bb59-9276df911c78","year":2010},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":36,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.321585Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:ae7938b04d0af4eedc6e851c57eb0c22b48a8240272a9396c500b5e0fdc38770","observation_id":"4221aa05-f6ea-4c07-a05d-543b56ca4703","resolution":{"observed_at":"2026-08-08T23:48:57.003086Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"0901.4688","last_updated":"2009-05-05T08:45:35Z","snapshot_observed_at":"2026-07-06T01:50:53.158645Z","submitted_at":"2009-01-29T14:31:06Z","title":"Chiral expansions of the pi0 lifetime","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"0901.4688","snapshot_observed_at":"2026-08-08T23:48:55.326037Z","title":"Chiral expan- sions of the π0 lifetime,","venue":null,"work_id":null,"year":2009},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":37,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.326037Z"},"links":{"cited_paper":"/paper/0901.4688","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:61a52b3d882c651f1a9593b7f34bce12618dd0f5b064b03c73abecdb16d31f51","observation_id":"b15bb4fc-06a0-4952-8db7-cd2b44b84851","resolution":{"observed_at":"2026-08-08T23:48:55.326037Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"hep-ph/0701077","last_updated":"2007-03-05T14:48:32Z","snapshot_observed_at":"2026-07-07T04:13:31.225722Z","submitted_at":"2007-01-10T13:58:49Z","title":"Axial anomaly and the precise value of the $\\pi^0 \\to 2 \\gamma$ decay width","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"hep-ph/0701077","snapshot_observed_at":"2026-08-08T23:48:55.330544Z","title":"Axial anomaly and the precise value of the π0 → 2γ decay width,","venue":null,"work_id":null,"year":2007},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":38,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.330544Z"},"links":{"cited_paper":"/paper/hep-ph/0701077","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:2107d4cf84fe5dbbfcc134bbea6edda5764cce8620d1074cec046ec8fd8a827e","observation_id":"625c2522-d17a-4265-a25e-8ac78b26bbcd","resolution":{"observed_at":"2026-08-08T23:48:55.330544Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2303.06282","last_updated":"2023-10-03T14:32:50Z","snapshot_observed_at":"2026-08-08T08:58:38.947383Z","submitted_at":"2023-03-11T02:32:42Z","title":"Search for a dark-matter induced Cosmic Axion Background with ADMX","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2303.06282","snapshot_observed_at":"2026-08-08T23:48:55.335372Z","title":"Search for a Dark-Matter- Induced Cosmic Axion Background with ADMX,","venue":null,"work_id":null,"year":2023},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":39,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.335372Z"},"links":{"cited_paper":"/paper/2303.06282","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:5b0ee76c7913189fef911c748294e461bd278901252ba1d91652926a3dac1f37","observation_id":"85ea205f-4070-414e-a7f8-71618cbdcd9e","resolution":{"observed_at":"2026-08-08T23:48:55.335372Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1606.07494","last_updated":"2016-06-27T15:04:19Z","snapshot_observed_at":"2026-08-09T10:08:34.335693Z","submitted_at":"2016-06-23T21:55:26Z","title":"Lattice QCD for Cosmology","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1606.07494","snapshot_observed_at":"2026-08-08T23:48:55.340034Z","title":"Calculation of the axion mass based on high-temperature lattice quantum chromodynamics,","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":40,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.340034Z"},"links":{"cited_paper":"/paper/1606.07494","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:2e986c1936a1b50c3840bc82a43d532f67f434e76b713f7d9bfaa1b72a956c55","observation_id":"96799b24-ca90-4361-a7ec-add59450856d","resolution":{"observed_at":"2026-08-08T23:48:55.340034Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1909.01131","last_updated":"2020-05-29T09:48:35Z","snapshot_observed_at":"2026-08-06T15:02:55.685741Z","submitted_at":"2019-09-03T12:57:40Z","title":"QCD at finite isospin density: chiral perturbation theory confronts lattice data","version":2},"cited_work":{"arxiv_id":"1909.01131","doi":null,"metadata_source":"pith","pith_arxiv_id":"1909.01131","snapshot_observed_at":"2026-08-08T23:48:56.449715Z","title":"QCD at finite isospin density: chiral perturbation theory confronts lattice data","venue":"hep-ph","work_id":"8d947ef9-b2f1-4b57-b4a6-a42d11739600","year":2019},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":41,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.344670Z"},"links":{"cited_paper":"/paper/1909.01131","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:9da266863f464b8d6a30ef00010561ca1dffe1b581317b5877c8fa874d7c8c69","observation_id":"09df6295-9e30-45cd-9e72-21b7cd38ec4d","resolution":{"observed_at":"2026-08-08T23:48:56.454717Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2010.13655","last_updated":"2021-02-21T23:18:55Z","snapshot_observed_at":"2026-07-06T10:08:36.623926Z","submitted_at":"2020-10-26T15:21:08Z","title":"Condensates and pressure of two-flavor chiral perturbation theory at nonzero isospin and temperature","version":2},"cited_work":{"arxiv_id":"2010.13655","doi":null,"metadata_source":"pith","pith_arxiv_id":"2010.13655","snapshot_observed_at":"2026-08-08T23:48:56.430719Z","title":"Condensates and pressure of two-flavor chiral perturbation theory at nonzero isospin and temperature","venue":"hep-ph","work_id":"e4e3941f-eac2-4b58-8f9e-4ddf1f2d28a2","year":2020},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":42,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.349335Z"},"links":{"cited_paper":"/paper/2010.13655","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:35fd2b6cf889b221bcbf25a1e9b374f9791f0136b3c4068f96891b961131a837","observation_id":"6243e0eb-d844-49b1-942a-cf0679200364","resolution":{"observed_at":"2026-08-08T23:48:56.435399Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1602.01317","last_updated":"2016-04-02T07:11:16Z","snapshot_observed_at":"2026-07-06T04:45:01.522501Z","submitted_at":"2016-02-03T14:39:01Z","title":"Equation of state of imbalanced cold matter from chiral perturbation theory","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1602.01317","snapshot_observed_at":"2026-08-08T23:48:55.354033Z","title":"Equation of state of imbalanced cold mat- ter from chiral perturbation theory,","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":43,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.354033Z"},"links":{"cited_paper":"/paper/1602.01317","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:0130e2999f103d95f5eb9cab0fa4e32c8562527fff651d11f1ae6e9114dafa65","observation_id":"0c3a55c9-9a60-44a1-a82e-21e09587c01c","resolution":{"observed_at":"2026-08-08T23:48:55.354033Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:55.358522Z","title":"Topological Susceptibility and QCD Axion Mass: QED and NNLO corrections,","venue":null,"work_id":null,"year":2019},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":44,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.358522Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:3b353a4718d9f4527e615e7d929e9900d8654f77e761e4f5bf996095e8ac1a17","observation_id":"554a4f98-c5e3-418d-b98f-65c21deed0fd","resolution":{"observed_at":"2026-08-08T23:48:55.358522Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2003.04903","last_updated":"2021-07-15T07:51:17Z","snapshot_observed_at":"2026-08-09T05:12:03.667784Z","submitted_at":"2020-03-10T18:00:03Z","title":"The QCD Axion at Finite Density","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2003.04903","snapshot_observed_at":"2026-08-08T23:48:55.362700Z","title":"The QCD Axion at Finite Density,","venue":null,"work_id":null,"year":2020},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":45,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.362700Z"},"links":{"cited_paper":"/paper/2003.04903","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:5214c388a6d2372e072622835997c614b05fca347791d0589f9b71d69e1a7d84","observation_id":"ea2658a0-e29f-4247-84a4-628e2dcba313","resolution":{"observed_at":"2026-08-08T23:48:55.362700Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1507.08570","last_updated":"2015-07-30T16:29:06Z","snapshot_observed_at":"2026-07-06T04:25:22.664904Z","submitted_at":"2015-07-30T16:29:06Z","title":"$\\theta$-dependence of the lightest meson resonances in QCD","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1507.08570","snapshot_observed_at":"2026-08-08T23:48:55.367337Z","title":"θ-dependence of the lightest meson resonances in QCD,","venue":null,"work_id":null,"year":2015},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":46,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.367337Z"},"links":{"cited_paper":"/paper/1507.08570","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:3c1f8bcd1eb47726ac911fd2eacb19e829483ff2d6de46d773fa13c590d295b3","observation_id":"59e764f1-e0d6-4259-a961-24d483ede716","resolution":{"observed_at":"2026-08-08T23:48:55.367337Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1506.05487","last_updated":"2015-08-17T07:41:21Z","snapshot_observed_at":"2026-07-06T04:21:14.280299Z","submitted_at":"2015-06-17T20:31:56Z","title":"Cumulants of the QCD topological charge distribution","version":3},"cited_work":{"arxiv_id":"1506.05487","doi":null,"metadata_source":"pith","pith_arxiv_id":"1506.05487","snapshot_observed_at":"2026-08-08T23:48:56.298690Z","title":"Cumulants of the QCD topological charge distribution","venue":"hep-ph","work_id":"f421ad71-63d7-4a98-8fca-f691bc573773","year":2015},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":47,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.372140Z"},"links":{"cited_paper":"/paper/1506.05487","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:4f32b3d23cc698bb43c98cb45fe4210a59cf9e763428d79ccc62181701313661","observation_id":"c196b730-bf38-4eb0-b24b-2346246fb65c","resolution":{"observed_at":"2026-08-08T23:48:56.303200Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:56.985502Z","title":"Chiral Perturbation Theory to One Loop,","venue":null,"work_id":"924787fd-6c1d-442e-a16e-c3c29807089e","year":1984},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":48,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.376695Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:15f1debb4c413a7284649c37c32b385b0b3bb68386084e8b090f0f7822e8208d","observation_id":"c0b0bd79-4173-4518-8356-cb5353eb1fef","resolution":{"observed_at":"2026-08-08T23:48:56.989829Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:56.972352Z","title":"Manifesting the Invisible Axion at Low-energies,","venue":null,"work_id":"977ce8eb-d185-4e23-a012-6b3b3adb8a1f","year":1986},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":49,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.381032Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:593b8cf3c9d550b2c797422f3bcb4b2e6d5b348bdf7545e133555f69fa421f7f","observation_id":"bc562df1-a7a1-454c-9ddd-60b4ee03ee6b","resolution":{"observed_at":"2026-08-08T23:48:56.976674Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:56.958825Z","title":"Light Pseudoscalars, Particle Physics and Cosmology,","venue":null,"work_id":"09035f36-bc70-4874-bcec-e8f6d01cb573","year":1987},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":50,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.385551Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:ba1ce901bb7569600caa3f3a4ec86aa6d149705cd5115b3a2f8492abb1bb8fe2","observation_id":"fb46da78-9ef9-452e-a8c5-5fb9ceabd287","resolution":{"observed_at":"2026-08-08T23:48:56.963170Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:56.944928Z","title":"Non- abelian Anomaly and Vector Meson Decays,","venue":null,"work_id":"c86f209e-249e-4a4a-bb0d-4f289d9237d9","year":1984},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":51,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.390212Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:c53170436f1f58833e76cd5517455afe5d55da32cd1a823ccc6ba7e54231a606","observation_id":"453e22cb-a855-4496-b5fe-a2c5dc1d0d04","resolution":{"observed_at":"2026-08-08T23:48:56.949359Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:56.930289Z","title":"Low-Energy Hadron Physics from Ef- fective Chiral Lagrangians with Vector Mesons,","venue":null,"work_id":"2262c3ff-6165-4f08-b907-c6dfddbb9971","year":1988},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":52,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.394440Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:3805c43211af79cc628e1d99ecd9fab6a02bae227b488b8e927d2afae2ea4c82","observation_id":"541e8ec7-25f3-4f70-b574-28f5f0c55801","resolution":{"observed_at":"2026-08-08T23:48:56.935376Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"ph/0011377","doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:56.277339Z","title":"Anomalies and WZW term of two fla- vor QCD,","venue":null,"work_id":"62ff2d57-b2d7-4079-95fd-5ff1d1a47bcc","year":2001},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":53,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.398786Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:faf1596911dda52cc1661d50d6a56d68170cbf59d4e1e268f7344a688b83ba49","observation_id":"671a5609-fa98-4232-804d-8f529347ded7","resolution":{"observed_at":"2026-08-08T23:48:56.284250Z","resolver_source":"raw_fallback","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"hep-ph/0110400","last_updated":"2005-10-26T14:06:17Z","snapshot_observed_at":"2026-07-07T03:54:04.623665Z","submitted_at":"2001-10-31T12:27:03Z","title":"The anomalous chiral Lagrangian of order $p^6$","version":3},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"hep-ph/0110400","snapshot_observed_at":"2026-08-08T23:48:55.403082Z","title":"The Anoma- lous chiral Lagrangian of order O(p6),","venue":null,"work_id":null,"year":2002},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":54,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.403082Z"},"links":{"cited_paper":"/paper/hep-ph/0110400","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:716f9da9137a9eed5657de4bfd2ed0f5587008f7423b080259de76f17d96ddf8","observation_id":"00301808-58a6-448b-a3cd-8a33db0ba8da","resolution":{"observed_at":"2026-08-08T23:48:55.403082Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:56.915737Z","title":"Chiral Loops in pi0, eta0 — > gamma gamma and eta eta-prime Mixing,","venue":null,"work_id":"21c5c877-6e47-4f1b-a411-41b2d51f0cbd","year":1985},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":55,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.408023Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:942d4741e6637157d6b0cc9c6c8a811fdb7d0b1e45ee5015ad3c5eb3f9a79108","observation_id":"50e13283-1130-4629-baf8-05ddfabf2d7f","resolution":{"observed_at":"2026-08-08T23:48:56.920265Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"hep-ph/0205232","last_updated":"2002-05-21T15:09:43Z","snapshot_observed_at":"2026-08-02T05:00:05.199953Z","submitted_at":"2002-05-21T15:09:43Z","title":"Electromagnetic corrections in the anomaly sector","version":1},"cited_work":{"arxiv_id":"hep-ph/0205232","doi":null,"metadata_source":"pith","pith_arxiv_id":"hep-ph/0205232","snapshot_observed_at":"2026-08-08T23:48:56.190277Z","title":"Electromagnetic corrections in the anomaly sector","venue":"hep-ph","work_id":"fff7c022-2a05-4db9-a975-c00b8b61f4da","year":2002},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":56,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.412413Z"},"links":{"cited_paper":"/paper/hep-ph/0205232","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:1f89a7f9f0f0259cb02032f7775dee6abbd5f86c5a5d25fc38aac9bccd0f5698","observation_id":"4bb5acbc-755c-44fa-9031-2efd944b391c","resolution":{"observed_at":"2026-08-08T23:48:56.195005Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"0901.1106","last_updated":"2009-09-02T20:15:05Z","snapshot_observed_at":"2026-07-06T01:47:45.207581Z","submitted_at":"2009-01-08T18:44:45Z","title":"Bose-Einstein Condensation of Dark Matter Axions","version":4},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"0901.1106","snapshot_observed_at":"2026-08-08T23:48:55.417126Z","title":"Bose-Einstein Condensation of Dark Matter Axions,","venue":null,"work_id":null,"year":2009},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":57,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.417126Z"},"links":{"cited_paper":"/paper/0901.1106","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:b1e95c32d4404a129353431444d0a96dddaa9f27959397eae64f08c08e9304d5","observation_id":"f9224b22-87cd-4ea4-a4d9-dca365672f6a","resolution":{"observed_at":"2026-08-08T23:48:55.417126Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2310.11018","last_updated":"2023-10-17T06:14:14Z","snapshot_observed_at":"2026-07-06T16:34:19.351760Z","submitted_at":"2023-10-17T06:14:14Z","title":"Aiming for Tops of ALPs with a Muon Collider","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2310.11018","snapshot_observed_at":"2026-08-08T23:48:55.421616Z","title":"Aiming for tops of ALPs with a muon collider,","venue":null,"work_id":null,"year":2024},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":58,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.421616Z"},"links":{"cited_paper":"/paper/2310.11018","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:92ab15a764b98cdf408807dbfcf05b34bddf334d8b9683a9fdc848c9f2f7479c","observation_id":"35267b25-8d80-4dd6-92f0-07a8c6563f04","resolution":{"observed_at":"2026-08-08T23:48:55.421616Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1710.03764","last_updated":"2020-09-11T18:01:44Z","snapshot_observed_at":"2026-08-04T16:53:20.241207Z","submitted_at":"2017-10-10T18:00:57Z","title":"A viable QCD axion in the MeV mass range","version":3},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1710.03764","snapshot_observed_at":"2026-08-08T23:48:55.426837Z","title":"A viable QCD axion in the MeV mass range,","venue":null,"work_id":null,"year":2018},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":59,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.426837Z"},"links":{"cited_paper":"/paper/1710.03764","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:030153a40923a060b4bc18bdf4805c690128c6c7223f4329a48adc9d4d5524d8","observation_id":"1b45d629-17f8-4867-a410-03af5bb5a7d1","resolution":{"observed_at":"2026-08-08T23:48:55.426837Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"hep-ph/9703409","last_updated":"1997-05-07T07:42:12Z","snapshot_observed_at":"2026-08-08T11:22:22.947681Z","submitted_at":"1997-03-25T09:18:01Z","title":"Grand unification and heavy axion","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"hep-ph/9703409","snapshot_observed_at":"2026-08-08T23:48:55.432671Z","title":"Grand unification and heavy axion,","venue":null,"work_id":null,"year":1997},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":60,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.432671Z"},"links":{"cited_paper":"/paper/hep-ph/9703409","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:440db88be69a4afbc792f26f2008cb9a872b3f27c8bbeb51409e9a4ac8bda111","observation_id":"7ef5a220-aad6-47b9-af33-22c82346c475","resolution":{"observed_at":"2026-08-08T23:48:55.432671Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"hep-ph/0009290","last_updated":"2001-01-29T17:33:18Z","snapshot_observed_at":"2026-07-07T03:49:57.571786Z","submitted_at":"2000-09-25T21:28:40Z","title":"Strong CP problem and mirror world: the Weinberg Wilczek axion revisited","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"hep-ph/0009290","snapshot_observed_at":"2026-08-08T23:48:55.437092Z","title":"Strong CP problem and mirror world: The Weinberg-Wilczek axion revisited,","venue":null,"work_id":null,"year":2001},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":61,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.437092Z"},"links":{"cited_paper":"/paper/hep-ph/0009290","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:4f0cd21f5333d5d1f35227d8c7dc39c3f940d64dd4f6daee34a5526cc299fbd1","observation_id":"5a30be10-b15e-4c19-8c78-a7a3d9ed836b","resolution":{"observed_at":"2026-08-08T23:48:55.437092Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1411.3325","last_updated":"2015-01-16T19:48:35Z","snapshot_observed_at":"2026-08-09T07:32:41.912598Z","submitted_at":"2014-11-12T21:00:03Z","title":"Anomalous solutions to the strong CP problem","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1411.3325","snapshot_observed_at":"2026-08-08T23:48:55.441854Z","title":"Anomalous solutions to the strong CP problem,","venue":null,"work_id":null,"year":2015},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":62,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.441854Z"},"links":{"cited_paper":"/paper/1411.3325","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:89783f7d1d014f8f3a52648b4315bf8a869b20c3ee09dfe4732d5323c007c668","observation_id":"9be5f9fd-cd78-4139-a87d-c3a6f6809ee8","resolution":{"observed_at":"2026-08-08T23:48:55.441854Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1504.06084","last_updated":"2015-05-07T04:55:19Z","snapshot_observed_at":"2026-08-08T18:17:31.425135Z","submitted_at":"2015-04-23T08:43:10Z","title":"A Model of Visible QCD Axion","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1504.06084","snapshot_observed_at":"2026-08-08T23:48:55.446637Z","title":"Model of visible QCD axion,","venue":null,"work_id":null,"year":2015},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":63,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.446637Z"},"links":{"cited_paper":"/paper/1504.06084","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:6a5dd75527d2e23db7b0dea3db44416718a993f9fcc3c3de54a99fec42cddb54","observation_id":"66b8aad3-9202-477d-96ec-c02dccf477f4","resolution":{"observed_at":"2026-08-08T23:48:55.446637Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1510.03392","last_updated":"2015-10-20T05:46:45Z","snapshot_observed_at":"2026-08-04T06:32:15.469651Z","submitted_at":"2015-10-12T18:53:13Z","title":"Strong CP and SUZ$_2$","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1510.03392","snapshot_observed_at":"2026-08-08T23:48:55.451288Z","title":"Strong CP and SUZ 2,","venue":null,"work_id":null,"year":2015},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":64,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.451288Z"},"links":{"cited_paper":"/paper/1510.03392","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:fbaf940ee1829a648220e61049b3cdbfcd0e02d84813f0dff7e603f8f4b54175","observation_id":"a2101c20-646d-40f4-aaf6-1bf2f1d55a05","resolution":{"observed_at":"2026-08-08T23:48:55.451288Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"hep-th/9202003","last_updated":"1992-02-06T23:25:22Z","snapshot_observed_at":"2026-07-31T03:48:26.077737Z","submitted_at":"1992-02-02T23:57:21Z","title":"Planck-Scale Physics and the Peccei-Quinn Mechanism","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"hep-th/9202003","snapshot_observed_at":"2026-08-08T23:48:55.455676Z","title":"Planck scale physics and the Peccei-Quinn mechanism,","venue":null,"work_id":null,"year":1992},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":65,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.455676Z"},"links":{"cited_paper":"/paper/hep-th/9202003","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:eb651165650d71f4d98a129e122a7c118ab86c9846ea4ba77678447382584c3c","observation_id":"bf208333-e705-45e3-8a1d-f16a621c2168","resolution":{"observed_at":"2026-08-08T23:48:55.455676Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:56.901734Z","title":"Planck scale corrections to axion models,","venue":null,"work_id":"ecea3e47-3087-4aa3-86ba-e10a0d5bf8e6","year":1992},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":66,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.460089Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:ea2c31b66bbfa46174cf2bdff202f3fc5c5eae5b650f8f3886b8facb4f081541","observation_id":"02f8bd62-168a-43d1-bef2-3bb7646a9190","resolution":{"observed_at":"2026-08-08T23:48:56.906289Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:56.887840Z","title":"In- stability of the invisible axion,","venue":null,"work_id":"f21fe011-4a45-40d5-a297-0719559f598e","year":1992},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":67,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.464217Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:699a3f5d8aaeaa96a648b9c08c3b3f3faad938883adc8b54369579db931ef852","observation_id":"4cd4942c-8b05-43aa-bab9-8cd0823acf8b","resolution":{"observed_at":"2026-08-08T23:48:56.892272Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"hep-ph/9203206","last_updated":"1992-03-09T19:44:08Z","snapshot_observed_at":"2026-07-07T04:14:16.305741Z","submitted_at":"1992-03-09T19:44:08Z","title":"Solutions to the strong CP problem in a world with gravity","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"hep-ph/9203206","snapshot_observed_at":"2026-08-08T23:48:55.468329Z","title":"Solutions to the strong CP prob- lem in a world with gravity,","venue":null,"work_id":null,"year":1992},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":68,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.468329Z"},"links":{"cited_paper":"/paper/hep-ph/9203206","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:3c14a6b605f78f2fd285194feb8b34e6f4772c9478dc22e32d39ee41ad4f927e","observation_id":"d11d9a69-0883-4979-ac06-756ee0bbaa9e","resolution":{"observed_at":"2026-08-08T23:48:55.468329Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1911.12364","last_updated":"2019-11-27T19:00:00Z","snapshot_observed_at":"2026-07-06T08:40:28.311410Z","submitted_at":"2019-11-27T19:00:00Z","title":"The High Quality QCD Axion and the LHC","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1911.12364","snapshot_observed_at":"2026-08-08T23:48:55.472989Z","title":"High Quality QCD Axion and the LHC,","venue":null,"work_id":null,"year":2020},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":69,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.472989Z"},"links":{"cited_paper":"/paper/1911.12364","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:7819357e6e72c455dc11130ce14aef33410758d1cd180bfc2ed0261b5dc199d1","observation_id":"b96a0afd-f3d0-42d0-ba30-4bbf4c41fdb3","resolution":{"observed_at":"2026-08-08T23:48:55.472989Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2302.04274","last_updated":"2023-02-08T19:00:00Z","snapshot_observed_at":"2026-08-06T01:46:21.083721Z","submitted_at":"2023-02-08T19:00:00Z","title":"A Heavy QCD Axion and the Mirror World","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2302.04274","snapshot_observed_at":"2026-08-08T23:48:55.477216Z","title":"A heavy QCD axion and the mirror world,","venue":null,"work_id":null,"year":2024},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":70,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.477216Z"},"links":{"cited_paper":"/paper/2302.04274","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:42fc201fb0859c72b6c4477bded0670c3cf146fbfb19eb83484cb8bd38af9b76","observation_id":"f146cd8a-4e5c-4cbb-90e7-0909386bd1a7","resolution":{"observed_at":"2026-08-08T23:48:55.477216Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:56.873440Z","title":"A Computation of the Small Instanton Contribution to the Axion Poten- tial,","venue":null,"work_id":"53af6d2d-85dd-48ac-91b3-cda8a028491b","year":1987},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":71,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.481688Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:76e3fb902a0f281e453df802d184dfaa3924af8b0da2914ecae77f05b28f18a7","observation_id":"19c54241-747c-4fca-b1a5-ddd802aa89e8","resolution":{"observed_at":"2026-08-08T23:48:56.878403Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:56.859347Z","title":"Mass Renor- malization by Instantons and the Strong CP Problem,","venue":null,"work_id":"df20f096-ef3a-40bb-8f7f-0aeffd75046d","year":1988},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":72,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.485789Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:880293a68cf62d55c90d5e9a92aef302c0645e2fd0fba801a9532aecb0ca58ca","observation_id":"0986d62e-e76b-40cc-a921-771757b60e77","resolution":{"observed_at":"2026-08-08T23:48:56.863906Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"ph/9809286","doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T23:48:56.005406Z","title":"Small instanton contribution to the axion potential in supersymmetric models,","venue":null,"work_id":"99a9b3ab-4358-43ec-8cc7-375553dba486","year":1999},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":73,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.489992Z"},"links":{"citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:4a1bf3e0884336b8d2e26229436e605bb2785f7795c80fa42953d50a6bc3b5ec","observation_id":"5a0d328d-0ea2-4c5d-993d-0e131dd0b77b","resolution":{"observed_at":"2026-08-08T23:48:56.012841Z","resolver_source":"raw_fallback","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1805.06465","last_updated":"2018-05-16T18:00:04Z","snapshot_observed_at":"2026-07-06T06:39:36.104463Z","submitted_at":"2018-05-16T18:00:04Z","title":"Color Unifed Dynamical Axion","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1805.06465","snapshot_observed_at":"2026-08-08T23:48:55.494033Z","title":"Color unified dynamical axion,","venue":null,"work_id":null,"year":2018},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":74,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.494033Z"},"links":{"cited_paper":"/paper/1805.06465","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:d9d450ca22724b7aaff94203dba8deeca1791866522432c32d60559e5fe75def","observation_id":"02db720c-95db-4c04-9902-d01acf17afe4","resolution":{"observed_at":"2026-08-08T23:48:55.494033Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2001.05610","last_updated":"2020-01-16T01:55:59Z","snapshot_observed_at":"2026-08-05T15:56:10.121946Z","submitted_at":"2020-01-16T01:55:59Z","title":"The Axion Mass from 5D Small Instantons","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2001.05610","snapshot_observed_at":"2026-08-08T23:48:55.498315Z","title":"The Axion Mass from 5D Small Instan- tons,","venue":null,"work_id":null,"year":2020},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":75,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.498315Z"},"links":{"cited_paper":"/paper/2001.05610","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:5f2f6bdc9edd509e031169c6425fdaf0d9556517d15513e00247a80001d13456","observation_id":"0b755c8f-296f-4748-9158-0002c7b159d0","resolution":{"observed_at":"2026-08-08T23:48:55.498315Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2011.05995","last_updated":"2021-05-20T14:06:43Z","snapshot_observed_at":"2026-07-06T10:13:47.951097Z","submitted_at":"2020-11-11T19:00:00Z","title":"Heavy Axion Opportunities at the DUNE Near Detector","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2011.05995","snapshot_observed_at":"2026-08-08T23:48:55.502615Z","title":"Heavy axion opportunities at the DUNE near detector,","venue":null,"work_id":null,"year":2021},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":76,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.502615Z"},"links":{"cited_paper":"/paper/2011.05995","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:b5d50ae6439703c698ec4bb93aea8d61d68ebab4933c937f8f962aac2d456e02","observation_id":"793a210f-77c3-4bb2-9e97-d71c863af8b9","resolution":{"observed_at":"2026-08-08T23:48:55.502615Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2102.04474","last_updated":"2023-05-22T14:31:48Z","snapshot_observed_at":"2026-08-04T11:58:11.554743Z","submitted_at":"2021-02-08T19:00:03Z","title":"Heavy QCD Axion in $b\\to s$ transition: Enhanced Limits and Projections","version":4},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2102.04474","snapshot_observed_at":"2026-08-08T23:48:55.506974Z","title":"Heavy QCD axion in b → s transition: Enhanced limits and projections,","venue":null,"work_id":null,"year":2021},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":77,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.506974Z"},"links":{"cited_paper":"/paper/2102.04474","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:db2e3f1e88dfbacea9a0d2deb94f667cd86e015ec729f8798ad79ba7ff18981e","observation_id":"14d6339e-10d1-47b3-92c6-e9f8b7c7b8e9","resolution":{"observed_at":"2026-08-08T23:48:55.506974Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2207.08448","last_updated":"2023-04-24T10:29:29Z","snapshot_observed_at":"2026-07-06T13:32:23.450920Z","submitted_at":"2022-07-18T09:01:35Z","title":"First Constraints on Heavy QCD Axions with a Liquid Argon Time Projection Chamber using the ArgoNeuT Experiment","version":3},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2207.08448","snapshot_observed_at":"2026-08-08T23:48:55.511359Z","title":"First Constraints on Heavy QCD Axions with a Liquid Argon Time Projection Chamber Using the ArgoNeuT Experiment,","venue":null,"work_id":null,"year":2023},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":78,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.511359Z"},"links":{"cited_paper":"/paper/2207.08448","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:3ae82e372cfea58add778c4792dde9292925a1cb5fe6948aebf1958d9aab0a1f","observation_id":"1b98e62b-7952-4403-819e-dfb93db932b0","resolution":{"observed_at":"2026-08-08T23:48:55.511359Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2210.02462","last_updated":"2022-10-05T18:00:01Z","snapshot_observed_at":"2026-07-06T14:00:05.253488Z","submitted_at":"2022-10-05T18:00:01Z","title":"Enhancing Searches for Heavy QCD Axions via Dimuon Final States","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2210.02462","snapshot_observed_at":"2026-08-08T23:48:55.516535Z","title":"Searches for heavy QCD axions via dimuon final states,","venue":null,"work_id":null,"year":2023},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":79,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.516535Z"},"links":{"cited_paper":"/paper/2210.02462","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:7d2e6691fa49dba05eba3e889a8d45ccd103e8a04dce0069b464a92afea3e1e8","observation_id":"77fb7cb8-ffaa-4096-8193-c9de335bff33","resolution":{"observed_at":"2026-08-08T23:48:55.516535Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2108.10331","last_updated":"2022-03-27T19:15:53Z","snapshot_observed_at":"2026-08-08T22:02:16.115338Z","submitted_at":"2021-08-23T18:00:05Z","title":"Heavy QCD Axion at Belle II: Displaced and Prompt Signals","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2108.10331","snapshot_observed_at":"2026-08-08T23:48:55.521954Z","title":"Heavy QCD axion at Belle II: Displaced and prompt signals,","venue":null,"work_id":null,"year":2022},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":80,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.521954Z"},"links":{"cited_paper":"/paper/2108.10331","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:303bde74c8d3a268aca405d6292d2a87e3ec09a9a8c391aecc6f515629179fff","observation_id":"f817193b-0298-475c-ac14-9eb03be0df2f","resolution":{"observed_at":"2026-08-08T23:48:55.521954Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2102.13112","last_updated":"2021-02-25T19:00:00Z","snapshot_observed_at":"2026-08-08T14:35:04.358156Z","submitted_at":"2021-02-25T19:00:00Z","title":"Consistent treatment of axions in the weak chiral Lagrangian","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2102.13112","snapshot_observed_at":"2026-08-08T23:48:55.526429Z","title":"Consistent Treatment of Axions in the Weak Chiral Lagrangian,","venue":null,"work_id":null,"year":2021},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":81,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.526429Z"},"links":{"cited_paper":"/paper/2102.13112","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:c996451c8b3c3fcaf9acfc52a160045b91466279a3f590ba5bf36b298cb7afe4","observation_id":"2deddca3-703f-4d5a-85ea-28c5a3768fac","resolution":{"observed_at":"2026-08-08T23:48:55.526429Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2403.16064","last_updated":"2026-06-29T13:38:41Z","snapshot_observed_at":"2026-07-06T17:49:40.841846Z","submitted_at":"2024-03-24T08:25:48Z","title":"Axion production in the $\\eta\\to \\pi\\pi a$ decay within $SU(3)$ chiral perturbation theory","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2403.16064","snapshot_observed_at":"2026-08-08T23:48:55.530645Z","title":"Axion production in the η → ππa decay within SU(3) chiral perturbation theory,","venue":null,"work_id":null,"year":2024},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":82,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.530645Z"},"links":{"cited_paper":"/paper/2403.16064","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:0906af7aedb00a37dc5e1c556ad25d7078b874740062e3712dc65b55e9518188","observation_id":"ae53dbb4-778e-44ba-b4e8-37c0ee9e8303","resolution":{"observed_at":"2026-08-08T23:48:55.530645Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1710.04213","last_updated":"2017-10-11T18:00:00Z","snapshot_observed_at":"2026-08-06T01:38:40.412150Z","submitted_at":"2017-10-11T18:00:00Z","title":"Factoring the Strong CP Problem","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1710.04213","snapshot_observed_at":"2026-08-08T23:48:55.535252Z","title":"Factoring the Strong CP Problem,","venue":null,"work_id":null,"year":2018},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":83,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.535252Z"},"links":{"cited_paper":"/paper/1710.04213","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:85578d33c4e72f3a11d743a16e60101efe75896b90149a4b962fa7408235e180","observation_id":"ff416ea8-24d8-4b04-9575-a0adf089086a","resolution":{"observed_at":"2026-08-08T23:48:55.535252Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1604.01127","last_updated":"2016-06-11T16:55:53Z","snapshot_observed_at":"2026-08-08T08:03:10.707422Z","submitted_at":"2016-04-05T03:44:55Z","title":"A Visible QCD Axion from an Enlarged Color Group","version":3},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1604.01127","snapshot_observed_at":"2026-08-08T23:48:55.539520Z","title":"A Visible QCD Axion from an Enlarged Color Group,","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":84,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.539520Z"},"links":{"cited_paper":"/paper/1604.01127","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:37aaf39b6ebb970ad38b3d336b7e52e1683db46b2a269a32b647d1ccb1a02ab1","observation_id":"c82d0472-faab-4e6b-bf9c-e80414d1473c","resolution":{"observed_at":"2026-08-08T23:48:55.539520Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2010.15846","last_updated":"2021-02-01T08:50:45Z","snapshot_observed_at":"2026-07-06T10:09:56.609184Z","submitted_at":"2020-10-29T18:00:03Z","title":"Selective enhancement of the QCD axion couplings","version":2},"cited_work":{"arxiv_id":"2010.15846","doi":null,"metadata_source":"pith","pith_arxiv_id":"2010.15846","snapshot_observed_at":"2026-08-08T23:48:55.719675Z","title":"Selective enhancement of the QCD axion couplings","venue":"hep-ph","work_id":"b8faa576-4b66-471b-98e3-4c09c877e580","year":2020},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":85,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.543839Z"},"links":{"cited_paper":"/paper/2010.15846","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:06828f2145e3974a9083a2eec290d1fa4fc22e995915ae78ae0889161d3ff5ca","observation_id":"e2934b0e-3d2d-4ae5-849e-d909b9ad6467","resolution":{"observed_at":"2026-08-08T23:48:55.724335Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1705.05370","last_updated":"2017-09-26T14:38:48Z","snapshot_observed_at":"2026-08-07T02:50:42.639621Z","submitted_at":"2017-05-15T18:00:00Z","title":"Window for preferred axion models","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1705.05370","snapshot_observed_at":"2026-08-08T23:48:55.548044Z","title":"Window for preferred axion models,","venue":null,"work_id":null,"year":2017},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":86,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.548044Z"},"links":{"cited_paper":"/paper/1705.05370","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:295ccbef1e4302f88faaab23ade27b21a33c4243b98887c97b8a238390250d09","observation_id":"8bc3c25b-e94a-4b5a-88ad-ac5e7f78015d","resolution":{"observed_at":"2026-08-08T23:48:55.548044Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2304.10240","last_updated":"2023-04-20T11:58:58Z","snapshot_observed_at":"2026-08-09T09:54:56.381665Z","submitted_at":"2023-04-20T11:58:58Z","title":"Exploring the axion potential and axion walls in dense quark matter","version":1},"cited_work":{"arxiv_id":"2304.10240","doi":null,"metadata_source":"pith","pith_arxiv_id":"2304.10240","snapshot_observed_at":"2026-08-08T23:48:55.686267Z","title":"Exploring the axion potential and axion walls in dense quark matter","venue":"hep-ph","work_id":"a72f1e22-989e-41e4-8883-760b134258cb","year":2023},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":87,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.553290Z"},"links":{"cited_paper":"/paper/2304.10240","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:4da326eada7f9c9b57ea21ee48eecbf5ad275d216da54c49e09e747c155e1cf8","observation_id":"fa71e18a-f04c-445c-9408-092649bd1009","resolution":{"observed_at":"2026-08-08T23:48:55.690931Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2404.15136","last_updated":"2024-11-21T14:30:42Z","snapshot_observed_at":"2026-07-06T18:04:26.177088Z","submitted_at":"2024-04-23T15:40:04Z","title":"QCD topology and axion properties in an isotropic hot and dense medium","version":2},"cited_work":{"arxiv_id":"2404.15136","doi":null,"metadata_source":"pith","pith_arxiv_id":"2404.15136","snapshot_observed_at":"2026-08-08T23:48:55.664207Z","title":"QCD topology and axion properties in an isotropic hot and dense medium","venue":"hep-ph","work_id":"3498c526-c2e4-43cf-bafb-687ad8c34934","year":2024},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":88,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.557476Z"},"links":{"cited_paper":"/paper/2404.15136","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:6b6865fc912f17c002349c6b91585e0f4e33943a3a5fa60ff3d6bcb774ec83ba","observation_id":"9f534f9a-178c-4246-b1b7-47ef2a8e9875","resolution":{"observed_at":"2026-08-08T23:48:55.671041Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-09T06:31:02.800959+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1708.00443","last_updated":"2017-12-07T06:03:21Z","snapshot_observed_at":"2026-08-04T05:12:28.702433Z","submitted_at":"2017-08-01T18:00:01Z","title":"Collider Probes of Axion-Like Particles","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1708.00443","snapshot_observed_at":"2026-08-08T23:48:55.561711Z","title":"Collider Probes of Axion-Like Particles,","venue":null,"work_id":null,"year":2017},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":89,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.561711Z"},"links":{"cited_paper":"/paper/1708.00443","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:524050fcfb9b36735b86fdb513a06c21a00b12641da0f669b037f0273bdf37f0","observation_id":"9da8a936-239f-4ee3-916b-a788491fdd5f","resolution":{"observed_at":"2026-08-08T23:48:55.561711Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2012.12272","last_updated":"2021-04-26T13:25:16Z","snapshot_observed_at":"2026-08-08T23:53:09.557651Z","submitted_at":"2020-12-22T19:00:01Z","title":"The Low-Energy Effective Theory of Axions and ALPs","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2012.12272","snapshot_observed_at":"2026-08-08T23:48:55.565873Z","title":"The Low-Energy Effective Theory of Axions and ALPs,","venue":null,"work_id":null,"year":2021},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":90,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.565873Z"},"links":{"cited_paper":"/paper/2012.12272","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:52c72f588a04638e580dc0d173a7b8b3fa241c6d241e62401f74cd2a9814fa61","observation_id":"c9db2177-6af4-4047-9db9-edfc6e527b4e","resolution":{"observed_at":"2026-08-08T23:48:55.565873Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2206.04061","last_updated":"2023-04-18T16:53:33Z","snapshot_observed_at":"2026-07-06T13:18:48.620328Z","submitted_at":"2022-06-08T18:00:00Z","title":"$a \\to \\pi \\pi \\pi$ decay at next-to-leading order in chiral perturbation theory","version":3},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2206.04061","snapshot_observed_at":"2026-08-08T23:48:55.570121Z","title":"a → πππ decay at next-to-leading order in chiral perturbation theory,","venue":null,"work_id":null,"year":2022},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":91,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.570121Z"},"links":{"cited_paper":"/paper/2206.04061","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:08479531756c1519607c4405c06edd8dad6ff72a84e4539891133c130a9605ca","observation_id":"98972fb5-f1a9-4464-8567-6baf357a8087","resolution":{"observed_at":"2026-08-08T23:48:55.570121Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2402.12454","last_updated":"2024-02-19T19:02:22Z","snapshot_observed_at":"2026-07-06T17:32:28.211114Z","submitted_at":"2024-02-19T19:02:22Z","title":"Axion-Like Particles in Radiative Quarkonia Decays","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2402.12454","snapshot_observed_at":"2026-08-08T23:48:55.574443Z","title":"Axion-like particles in radiative quarkonia decays,","venue":null,"work_id":null,"year":2024},"citing_paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions","version":2},"reference_index":92,"source":"pdf_text","source_observed_at":"2026-08-08T23:48:55.574443Z"},"links":{"cited_paper":"/paper/2402.12454","citing_paper":"/paper/2502.04060"},"observation_digest":"sha256:ec4572df76b9852c14a413ed9d68af54746e0189f917c8ca9cd9a7d31cf5a2b2","observation_id":"1fa00477-0028-418d-8553-0cd5107df229","resolution":{"observed_at":"2026-08-08T23:48:55.574443Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"paper":{"arxiv_id":"2502.04060","last_updated":"2025-02-24T14:15:45Z","latest_version":2,"primary_category":"hep-ph","snapshot_observed_at":"2026-08-09T05:58:29.602477Z","submitted_at":"2025-02-06T13:18:29Z","title":"New axion contribution to the two-photon decays of neutral pions"},"reference_resolution":{"displayed":92,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":63,"verified_exact":14,"verified_fuzzy":15},"total_outbound_references":92},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-09T06:31:02.800959+00:00","source":"crossref"},{"observed_at":"2026-08-09T06:30:57.326959+00:00","source":"retraction_watch"}],"thesis":"As of 9 August 2026, this Paper Citation Record lists 92 of 92 outbound references and 0 inbound Pith citation observations for arXiv:2502.04060."}