{"as_of":"2026-08-18T19:49:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:ed7dbd93fd525364c89a1891344041791eb347d2644932f5362a4202c16c343d","coverage":[{"denominator":47,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":47,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-16T00:13:45.444342Z","state":"measured"},{"denominator":47,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":47,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-18T06:34:40.430872+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/2608.12747/citation-record","integrity":"/paper/2608.12747/integrity","json":"/paper/2608.12747/citation-record.json","paper":"/paper/2608.12747"},"outbound":[{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-16T00:13:47.873894Z","title":"Precision physics of simple atoms: QED tests, nuclear structure and fundamental con- stants,","venue":null,"work_id":"0f55ad10-2cee-47d3-b69b-c61d329d9579","year":2005},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":1,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.386624Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:0a0eed0d0adf06746cbea17c2e1472bd19a16388600d1d336f3b72ff7cf6830e","observation_id":"3144e639-dd2d-4b56-910f-d9b70bdd6b0c","resolution":{"observed_at":"2026-08-16T00:13:47.892247Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:47.805292Z","title":null,"venue":null,"work_id":"1ae978ab-44e1-4a07-9c72-5263105f01a3","year":2023},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":2,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.446450Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:dbb6434dea8d7f26b30786aa41bc2753e1244468479dc97ad0eb2f073c7d29db","observation_id":"83a3e829-e5bd-4350-b3ad-0fd52e539efb","resolution":{"observed_at":"2026-08-16T00:13:47.826662Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:47.748168Z","title":"Ionization energy of metastable 3he (2 3s1) and the alpha- and helion-particle charge-radius difference from precision spectroscopy of thenprydberg series,","venue":null,"work_id":"80ad9d2f-265a-48b0-8d9c-d00d04312ae4","year":2025},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":3,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.542558Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:e07bd7f588778c5cdb0ce8b27ae31d090623cde88c585bf5c1c7e7b3b0ba0365","observation_id":"a05bdd37-5ee5-42bc-aba7-6871ed2f6d53","resolution":{"observed_at":"2026-08-16T00:13:47.780169Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:47.712340Z","title":"Completeα 7mlamb shift of helium triplet states,","venue":null,"work_id":"34e8c927-6dec-44e3-a68d-b014d9d836d6","year":2021},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":4,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.572427Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:3b43c3904458ebad32a5f72d7ed550cfdebd95e81bc6df0fa327ef08191e9e70","observation_id":"4be99346-7320-4bfd-8fa2-ed7023b6562a","resolution":{"observed_at":"2026-08-16T00:13:47.721680Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:47.654415Z","title":"The ionization energy of metastable triplet helium,","venue":null,"work_id":"9b92829b-0dce-471e-8dbc-b23d6ea87122","year":2025},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":5,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.591529Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:ea9a9f8d3a32f1826a5cee74a386429cfd45f7359581d786655b2b7ff3e0ed4b","observation_id":"4d0dd1bf-4390-45f5-8933-4dec56fbefdd","resolution":{"observed_at":"2026-08-16T00:13:47.662615Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-16T00:13:44.646431Z","title":"Testing exotic electron– electron interactions with the helium ionization-energy anomaly,","venue":null,"work_id":null,"year":2026},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":6,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.646431Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:b6854bc28299db00323e6bc4f7ae26f85d3e05c2cb8d08234563e4f8fe75df75","observation_id":"ef2028cc-b380-423d-9e10-9ca835c0f017","resolution":{"observed_at":"2026-08-16T00:13:44.646431Z","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":"2026-08-16T00:13:47.590193Z","title":"Spectroscopy of 4He at 0.25 ppt un- certainty and improved alpha-helion charge-radius dif- ference determination,","venue":null,"work_id":"de6135a6-78a4-46e8-b972-ebf4a3e805f6","year":2026},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":7,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.747650Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:f98a6c3cd26e3ff308f0d0c681c7cc264de576669602bffa90ad0a444cb827cb","observation_id":"b6e5d352-bce8-4334-ae3f-ff72c116f487","resolution":{"observed_at":"2026-08-16T00:13:47.601490Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-16T00:13:44.804736Z","title":"Precision physics of simple atoms and constraints on a light boson with ultraweak cou- pling,","venue":null,"work_id":null,"year":2010},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":8,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.804736Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:d987e43148a35ff6d90c651b14fa076594e37f8cc6e34d1e8f2026a06204eaac","observation_id":"ce22dcad-60e8-4693-bbc1-154fc3cf6ae4","resolution":{"observed_at":"2026-08-16T00:13:44.804736Z","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":"2026-08-16T00:13:47.481934Z","title":"New measurement of the 1s−3stransition frequency of hydrogen: Contribution to the proton charge radius puzzle,","venue":null,"work_id":"1f827d0d-5a20-4ca1-973a-9b9a81756871","year":2018},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":9,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.817004Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:91a8f0d4142cc613da3bfd5e0368ebfada15d51f3c0d812760d00e739cddeb35","observation_id":"faad50cf-34f0-477e-a71c-c50d52a993a9","resolution":{"observed_at":"2026-08-16T00:13:47.492140Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:47.420950Z","title":"A measurement of the atomic hydrogen lamb shift and the proton charge radius,","venue":null,"work_id":"b90f472e-2274-4e4a-9361-bc035649dc3e","year":2019},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":10,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.863465Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:d1484a6d94a45da7af25d2b36c235cb91b7a07a49971c204bd369a250331b55f","observation_id":"95b54ca0-7902-4259-929e-8ed69ecca155","resolution":{"observed_at":"2026-08-16T00:13:47.447309Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:47.346542Z","title":"Precision- spectroscopic determination of the binding energy of a two-body quantum system: The hydrogen atom and the proton-size puzzle,","venue":null,"work_id":"7fadb4cf-9b1c-4f70-8424-61b57c961522","year":2024},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":11,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.880101Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:bd77d88a0867b7add7d37ead192a4adc71cf63f89d0bcb9ac7f55806d03a13be","observation_id":"5bf6569b-9564-46a4-a7ff-07c35ea817a7","resolution":{"observed_at":"2026-08-16T00:13:47.360420Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:47.283199Z","title":"Sub-part-per-trillion test of the Stan- dard Model with atomic hydrogen,","venue":null,"work_id":"14a8feb0-e3fc-472b-9282-02acca659531","year":2026},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":12,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.895369Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:c96318a99829349188e21f939ca7664f436e51cb0e051e008b51868b0dbfe71d","observation_id":"35b9cbab-063b-4498-96dd-b204bfbedb79","resolution":{"observed_at":"2026-08-16T00:13:47.309178Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:47.250928Z","title":"Precision spectroscopy of 2s-ns transitions in atomic hydrogen: A determination of the proton charge radius,","venue":null,"work_id":"82c19aa4-e8dd-40cc-a7a8-775a3b5737f2","year":2026},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":13,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.910291Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:2c8aa8a370c8228bc1c67137c160098f989b8f651b7bf8a3bb4d6aa02f3fe1dc","observation_id":"365d57ba-cbf2-42df-bda2-fa34ea974228","resolution":{"observed_at":"2026-08-16T00:13:47.258638Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:47.214084Z","title":"Improved measure- ment of the hydrogen 1S−2Stransition frequency,","venue":null,"work_id":"d9560ca2-485d-4ce1-81a8-0e6b27370001","year":2011},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":14,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.929171Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:50cf59168fa74a6faa6e7cb38914f5032dfceaa1c815ba59efe6175f68bcdfce","observation_id":"90824f3f-5720-4d6b-ad23-b365e88d05d1","resolution":{"observed_at":"2026-08-16T00:13:47.222835Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:47.174922Z","title":"Polyelectrons,","venue":null,"work_id":"66783e2f-f128-4560-b7ac-64bc168df079","year":1946},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":15,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.940287Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:33e37d5e0d12641b721de656ea63640155c98bd9059bb2acf21843279a37c339","observation_id":"93d70063-49b2-47aa-8574-9f1e7d32f379","resolution":{"observed_at":"2026-08-16T00:13:47.188905Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:47.146181Z","title":"Precision spectroscopy of positronium: Testing bound-state QED theory and the search for physics be- yond the standard model,","venue":null,"work_id":"aaa9edff-d61a-4523-a42e-5d1f7196c308","year":2022},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":16,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.959502Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:98ee965a9787987754aec03578ee217f562ace70d49196947d51c7c1c504a4b6","observation_id":"7fa14a09-4e17-4598-8725-c46c5eec8047","resolution":{"observed_at":"2026-08-16T00:13:47.156649Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-16T00:13:44.983967Z","title":null,"venue":null,"work_id":null,"year":1957},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":17,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.983967Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:9ef43d70c4acfe0a2c1db3ee1c2522ceba0a12a30bb051ec62cfeec5d9405b5b","observation_id":"f96d7079-fdcb-4a1d-94f5-4cc5c7033d74","resolution":{"observed_at":"2026-08-16T00:13:44.983967Z","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":"2026-08-16T00:13:47.084882Z","title":"Current and future perspectives of positronium and muonium spectroscopy as dark sectors probe,","venue":null,"work_id":"d5b8f852-b6ab-4d2c-90fe-171b9b78f8e4","year":2019},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":18,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:44.996579Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:d9d46b68c23f2db555f7149683904f6287539355fcbc6e3c6a20771c8f668719","observation_id":"148ebf3f-ec5f-4ac2-b688-22297bfee87b","resolution":{"observed_at":"2026-08-16T00:13:47.096324Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:47.061441Z","title":"Probing new spin-independent interac- tions through precision spectroscopy in atoms with few electrons,","venue":null,"work_id":"4d25b8dd-56f9-4114-a455-435961f6cd94","year":2017},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":19,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.009867Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:d8e6dadad9bb07473c191af272b0ac38900e52298e599874afa58f66897dff24","observation_id":"0c255070-ab27-4051-ab12-d1afe73ce2eb","resolution":{"observed_at":"2026-08-16T00:13:47.068523Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:47.037743Z","title":"Con- straints on new physics in electrong−2 from a search for invisible decays of a scalar, pseudoscalar, vector, and axial vector,","venue":null,"work_id":"db2c72d7-434a-400b-bc0f-119a14c9f4f7","year":2021},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":20,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.035084Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:b76605e6ffb8d4e5dad13bfefe8b211cd75c97e7bf074e1d7313d19125b60571","observation_id":"238411bf-4e9e-46f1-bfbc-25551e28563e","resolution":{"observed_at":"2026-08-16T00:13:47.044654Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:47.011123Z","title":"PositroniumS-state spectrum: Analytic results ato(mα 6),","venue":null,"work_id":"cafeaecf-476a-477a-9b84-614fb32cb004","year":1999},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":21,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.044468Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:f29243e8c704350d2e095547f3ff3f1fb2a9a9097b327bcbf2e3a8a6e5538ca9","observation_id":"23e49b73-13c7-4cee-96aa-8f1d35c2cbaf","resolution":{"observed_at":"2026-08-16T00:13:47.017886Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.976846Z","title":"Higher order corrections to positronium energy levels,","venue":null,"work_id":"d36c5188-91d6-4913-86be-66c8e6a0685c","year":2018},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":22,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.060577Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:d118088a4fc832b5f2bcaa45d49aa966351f8dfc96d830795e59f17bf476acbd","observation_id":"e21beb2e-9e18-40b8-88b9-b77e70062eef","resolution":{"observed_at":"2026-08-16T00:13:46.983576Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.929214Z","title":"Calculation of higher order corrections to positronium energy levels,","venue":null,"work_id":"9070e586-bcdf-4b86-bae9-672cf379c42b","year":2019},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":23,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.074181Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:c91be8e0c4e7ed3145a8debbcf70bf439a3a55f597cf4ab0381c9d758a24f588","observation_id":"5cff8880-3e43-4284-8b77-36967c36fa1d","resolution":{"observed_at":"2026-08-16T00:13:46.954230Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.900366Z","title":"Constraints on exotic spin-dependent interac- tions between electrons from helium fine-structure spec- troscopy,","venue":null,"work_id":"4e11c917-059a-4b22-b48e-7a55278fc669","year":2017},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":24,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.085020Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:74c9a91117b5cb5dea7791ef5a51b9c85299ef4a9a01cc8b373115cf58948e45","observation_id":"fa6cc824-1bba-4285-b6da-51c31f9d3e3b","resolution":{"observed_at":"2026-08-16T00:13:46.908522Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.863134Z","title":"Excitation of the Positro- nium 13S1→2 3S1 Two-Photon Transition,","venue":null,"work_id":"54c9bda9-663f-49c5-9d2e-1cceb83da12d","year":1982},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":25,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.123033Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:c7637661e26847c642c024d5a65bc16638eed0924e852252ca337b2a1e6536d1","observation_id":"bbf71931-903d-404e-8795-f850ca208679","resolution":{"observed_at":"2026-08-16T00:13:46.873418Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.835958Z","title":"Measurement of the positronium 1 3s1–2 3s1 interval by doppler-free two- photon spectroscopy,","venue":null,"work_id":"f986eb3b-6827-4d88-9216-da4139923c3f","year":1984},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":26,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.133052Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:079226bc0d3ba84d1bc7f8898eb681c8566b040449d85f0c79851c607a58bb5e","observation_id":"edf4d6dd-b72e-4df6-8072-1e3a6c1cece2","resolution":{"observed_at":"2026-08-16T00:13:46.845322Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.795934Z","title":"Measurement of the positronium 1 3s1–2 3s1 inter- val by continuous-wave two-photon excitation,","venue":null,"work_id":"3c2dc200-f652-469a-9c49-ea8283525042","year":1993},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":27,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.151163Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:8c23c9c8f5c138b619eecb37ecae129f2d93f16240a4ada687b6602d3d179416","observation_id":"fde53e0c-8a39-460a-9c6e-714d92cf9682","resolution":{"observed_at":"2026-08-16T00:13:46.806170Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.752701Z","title":"Measurement of the positronium 1 3s1–2 3s1 interval by continuous-wave two-photon excitation,","venue":null,"work_id":"651f12cb-06b5-4726-9f75-e44d8464c564","year":1993},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":28,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.162457Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:14abdae20a187412262cc0bd76c52f7796c81607515b638bd587129c07b3cd71","observation_id":"51eb2f6a-d927-4660-b9ce-e636a3f80467","resolution":{"observed_at":"2026-08-16T00:13:46.763023Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.681380Z","title":"Precision continuous-wave laser measurement of the 13S1→2 3S1 interval in positro- nium,","venue":null,"work_id":"fae9baa6-c07e-453a-a6f0-514b7da63179","year":2026},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":29,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.173826Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:0c92554e2bb9fe07c189fba54f58751c171efd37149b124e490fea4f87f14f1a","observation_id":"2a3ba68d-7625-484c-a9ba-3fdd0e23c0d4","resolution":{"observed_at":"2026-08-16T00:13:46.700199Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.633484Z","title":"Experimental progress in positronium laser physics,","venue":null,"work_id":"8ae86372-9ce1-4ec1-9e8b-2c4e69513372","year":2018},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":30,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.189071Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:66fb40ec3ace520dcefa3395939eb25332f8438121be8156577c65121e95a3b3","observation_id":"e0723bae-227e-431b-a254-9e6f43513b4e","resolution":{"observed_at":"2026-08-16T00:13:46.651865Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.604573Z","title":"Observation of 6 positronium annihilation in the 2sstate: Towards a new measurement of the 1s–2stransition frequency,","venue":null,"work_id":"918b853b-a77d-45f8-86fc-1fa2ab996d56","year":2015},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":31,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.207717Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:74a1e0a4c67b49ae2a89251e652a41d7a1a521c5adbcf298e6c817d1d6d90a67","observation_id":"94d3c20e-aadc-4c43-b9d0-921dacce0394","resolution":{"observed_at":"2026-08-16T00:13:46.616741Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.570108Z","title":"Decelerating and cooling positronium for high-precision 1S–2S spectroscopy,","venue":null,"work_id":"684d7bfa-b6b6-413e-b4e3-98673a842945","year":2016},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":32,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.216927Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:02d22e6288decffa2f8616e409175bbbb9dfe513dc5a86c04912eff66e8b8149","observation_id":"481d8080-769c-4bc6-b073-84ad13e1e3c5","resolution":{"observed_at":"2026-08-16T00:13:46.579822Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.533950Z","title":"Positro- nium laser cooling via the 1 3S−23Ptransition with a broadband laser pulse,","venue":null,"work_id":"2c980460-7709-4e9e-8ed7-6532fe2a2972","year":2024},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":33,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.234808Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:5f26157d636ba25a6e111ba8bdfcc23d9ced7446493e716d4f3be62763b99012","observation_id":"90a4b818-32b4-451b-af26-78c2326f0eef","resolution":{"observed_at":"2026-08-16T00:13:46.540979Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.503221Z","title":"Cooling positronium to ul- tralow velocities with a chirped laser pulse train,","venue":null,"work_id":"e9730fab-886b-46d7-8161-9be1effd82cf","year":2024},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":34,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.255865Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:4d0e5fcbbc965c19fda2d968d2427f482859824839e476cfed62e962f5148969","observation_id":"b8b8f4ef-13ed-49e4-b36d-748205b2281b","resolution":{"observed_at":"2026-08-16T00:13:46.512679Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.467275Z","title":"Measurement of the 1 3s1→2 3s1 interval in positronium using field ioniza- tion of rydberg states,","venue":null,"work_id":"fb16e8c1-b54b-4713-8ddd-c6fef0d8d1a8","year":2025},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":35,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.270108Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:e8a089491b63f38e18447962386afb867c57076e996af128c49e6263f68808f8","observation_id":"3d108760-5cbb-42a7-a946-4a01c12b729c","resolution":{"observed_at":"2026-08-16T00:13:46.482876Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.439256Z","title":"Two-photon optical ramsey–doppler spectroscopy of positronium and muonium,","venue":null,"work_id":"f3a2ff9d-bc9c-4109-8a46-ddcd26d5e80b","year":2025},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":36,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.288642Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:358f842588128d04b30c3feda290840a19bb9a1d262f45bc2ea85e03493b5b21","observation_id":"28c579c0-277b-4893-b900-771043087d32","resolution":{"observed_at":"2026-08-16T00:13:46.447594Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.416089Z","title":"A new broadly tunable (7.4–10.2ev) laser based vuv light source and its first application to aerosol mass spectrometry,","venue":null,"work_id":"6fb91e15-9aa1-4a99-8f15-30236ff48582","year":2009},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":37,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.295990Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:cae40117becfc257ef5554e9544602f3472d6b4b8274887b3558d06f2ff75abd","observation_id":"0aa951d4-c647-45ce-84c5-db4c76e96619","resolution":{"observed_at":"2026-08-16T00:13:46.422737Z","resolver_source":"raw_fallback","status":"malformed_identifier"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.382980Z","title":"First observation of resonant excitation of high-nstates in positronium,","venue":null,"work_id":"f014f2e3-a4cc-4058-b203-6325d7b40114","year":1990},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":38,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.313457Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:76dcf233ba39480229315a12e416e94eb2940945e36a0fffbb54ffadc5e84dfa","observation_id":"174d11f8-6a59-489a-8563-cc43d31a61af","resolution":{"observed_at":"2026-08-16T00:13:46.391933Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.144775Z","title":"Efficient Production of Rydberg Positro- nium,","venue":null,"work_id":"889b29c7-ef2d-4bc5-b7bb-dac5acbd908e","year":2012},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":39,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.323533Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:1aea2d4ef4174920f29e44166628ef66de23906e520fde420f78c0936793621c","observation_id":"9213a11f-bd57-4ac0-8333-3208cddf128a","resolution":{"observed_at":"2026-08-16T00:13:46.254355Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.109105Z","title":"Selective Production of Rydberg-Stark States of Positronium,","venue":null,"work_id":"f545c09a-9dca-4a7d-9461-8f31162c9266","year":2015},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":40,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.334953Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:d647377f506d94de705662646770db60d36ef2355a802e143b401940659b79c2","observation_id":"1bb94c70-3c0f-4607-b3ae-c514e7ecdd7c","resolution":{"observed_at":"2026-08-16T00:13:46.122283Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.070928Z","title":"Laser excita- tion of then= 3 level of positronium for antihydrogen production,","venue":null,"work_id":"115f2aa7-3fc2-41a4-a3e5-745974b05a76","year":2016},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":41,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.356295Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:ec4497c0fb7329c6ff39ab7e1f2dc8d715b6bac94c4d4c4b592fff215d047b6c","observation_id":"2c500b77-1d5d-4b8a-9040-53a84f9379bb","resolution":{"observed_at":"2026-08-16T00:13:46.082276Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:46.026095Z","title":"Excitation of positronium: from the ground state to Rydberg levels,","venue":null,"work_id":"f0b83013-f1dc-4546-af7b-1b435a25e8d2","year":2018},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":42,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.373148Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:1e1dd8dcf3d99a64e7528f1f5445aa9761b1ce69015a0b84894a433f8dadd49e","observation_id":"7e9f5a1a-eb4f-468a-abf0-e84557db63c5","resolution":{"observed_at":"2026-08-16T00:13:46.038740Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:45.990160Z","title":null,"venue":null,"work_id":"7d8fa98f-eca1-4ed6-9d0a-0cc266064641","year":1994},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":43,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.387107Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:fbf2052216724be37372aae738ec1a0851154028b834677bcf117d20ee70c6f4","observation_id":"f1fc168b-71ef-4c22-b2dd-2c0125fb2835","resolution":{"observed_at":"2026-08-16T00:13:46.000835Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:45.949327Z","title":"Metrology of rydberg states of the hydrogen atom,","venue":null,"work_id":"ff0ea002-203a-4715-84c4-f8b2c5a59048","year":2023},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":44,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.400890Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:e730a057a706e22b609fd437e490cc6a98022af248439d550cc2724bd38364e4","observation_id":"978690d7-655e-45d4-8851-b4447816b917","resolution":{"observed_at":"2026-08-16T00:13:45.960454Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:45.898581Z","title":"Precision microwave spectroscopy of the positron- iumn= 2 fine structure,","venue":null,"work_id":"96ff82bf-f2d5-474f-86dd-4afb289c4443","year":2020},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":45,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.417846Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:f071da3cbe114dbdda6d44a1acde18ff93831bf6b80127c11bf5e11f48dce8c0","observation_id":"39799c20-4024-471b-9dac-2180f147e36c","resolution":{"observed_at":"2026-08-16T00:13:45.914952Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:45.828834Z","title":"Precision microwave spectroscopy of the positronium 2 3S1→2 3P2 interval,","venue":null,"work_id":"efebd318-e112-44ed-9683-9c8a20003f1f","year":2023},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":46,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.432262Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:6e5c9472e167733112519cacef757803abb63a3cf605baf8aeac40b15fe03945","observation_id":"21173619-feb0-4d50-849c-6ec618a2aae3","resolution":{"observed_at":"2026-08-16T00:13:45.844512Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+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":"2026-08-16T00:13:45.745163Z","title":"Phase-variation ram- sey spectroscopy of the 2 3s1→2 3p2 interval in positron- ium,","venue":null,"work_id":"dcd28f91-8ed0-4abf-8886-7450b2de939f","year":2026},"citing_paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly","version":1},"reference_index":47,"source":"pdf_text","source_observed_at":"2026-08-16T00:13:45.444342Z"},"links":{"citing_paper":"/paper/2608.12747"},"observation_digest":"sha256:6521e2e12f125c795cdbf03e856e9d55a05d299d827c7803f87b52d4cade36a4","observation_id":"5f4d893f-db20-4d7a-8556-e4f8d61a6ba0","resolution":{"observed_at":"2026-08-16T00:13:45.762094Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+00:00","source":"retraction_watch"}],"state":"measured"}}],"paper":{"arxiv_id":"2608.12747","last_updated":"2026-08-13T02:53:00Z","latest_version":1,"primary_category":"physics.atom-ph","snapshot_observed_at":"2026-08-16T23:10:55.619484Z","submitted_at":"2026-08-13T02:53:00Z","title":"Precision Positronium Spectroscopy as a Test of the Helium Ionization Energy Anomaly"},"reference_resolution":{"displayed":47,"state_counts":{"malformed_identifier":1,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":5,"verified_exact":0,"verified_fuzzy":41},"total_outbound_references":47},"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":"2026-08-18T06:34:40.430872+00:00","source":"crossref"},{"observed_at":"2026-08-18T06:34:34.496301+00:00","source":"retraction_watch"}],"thesis":"As of 18 August 2026, this Paper Citation Record lists 47 of 47 outbound references and 0 inbound Pith citation observations for arXiv:2608.12747."}