{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:LAPQPQCGF3S5VMBURGOAHGK6DQ","short_pith_number":"pith:LAPQPQCG","schema_version":"1.0","canonical_sha256":"581f07c0462ee5dab034899c03995e1c084e66be66c8fc238efde2d2336c7261","source":{"kind":"arxiv","id":"1712.08705","version":1},"attestation_state":"computed","paper":{"title":"Toward a determination of the proton-electron mass ratio from the Lamb-dip measurement of HD","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"A.-W. Liu, J. Komasa, J. Wang, K. Pachucki, L.-G. Tao, S.-M. Hu, Y. R. Sun","submitted_at":"2017-12-23T03:02:24Z","abstract_excerpt":"Precision spectroscopy of the hydrogen molecule is a test ground of quantum electrodynamics (QED), and may serve for determination of fundamental constants. Using a comb-locked cavity ring-down spectrometer, for the first time, we observed the Lamb-dip spectrum of the R(1) line in the overtone of HD. The line position was determined to be 217 105 182.79 $\\pm0.03_{stat}\\pm0.08_{syst}$ MHz ($\\delta\\nu/\\nu=4\\times 10^{-10}$), which is the most accurate transition ever measured for the hydrogen molecule. Moreover, from calculations including QED effects up to the order $m_e\\alpha^6$, we obtained p"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1712.08705","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2017-12-23T03:02:24Z","cross_cats_sorted":[],"title_canon_sha256":"9e504aa78c61144573fc0ba87f1adf7d0d46227a3291484940a0cf25f95e2723","abstract_canon_sha256":"ee3efcc7629733c98c1ba73f50dc791531ced86f420a4031f999409caa6f91d5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:14.271193Z","signature_b64":"Gf6jry9vFffbKLRQoJTL6chrCruqs64KRZFZhjwy+Z1Ej/tJV60aB7k9g2AzlufvhYJ4Mgi1B/ZMZEtE1+veDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"581f07c0462ee5dab034899c03995e1c084e66be66c8fc238efde2d2336c7261","last_reissued_at":"2026-05-18T00:18:14.270509Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:14.270509Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Toward a determination of the proton-electron mass ratio from the Lamb-dip measurement of HD","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"A.-W. Liu, J. Komasa, J. Wang, K. Pachucki, L.-G. Tao, S.-M. Hu, Y. R. Sun","submitted_at":"2017-12-23T03:02:24Z","abstract_excerpt":"Precision spectroscopy of the hydrogen molecule is a test ground of quantum electrodynamics (QED), and may serve for determination of fundamental constants. Using a comb-locked cavity ring-down spectrometer, for the first time, we observed the Lamb-dip spectrum of the R(1) line in the overtone of HD. The line position was determined to be 217 105 182.79 $\\pm0.03_{stat}\\pm0.08_{syst}$ MHz ($\\delta\\nu/\\nu=4\\times 10^{-10}$), which is the most accurate transition ever measured for the hydrogen molecule. Moreover, from calculations including QED effects up to the order $m_e\\alpha^6$, we obtained p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.08705","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1712.08705","created_at":"2026-05-18T00:18:14.270593+00:00"},{"alias_kind":"arxiv_version","alias_value":"1712.08705v1","created_at":"2026-05-18T00:18:14.270593+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.08705","created_at":"2026-05-18T00:18:14.270593+00:00"},{"alias_kind":"pith_short_12","alias_value":"LAPQPQCGF3S5","created_at":"2026-05-18T12:31:28.150371+00:00"},{"alias_kind":"pith_short_16","alias_value":"LAPQPQCGF3S5VMBU","created_at":"2026-05-18T12:31:28.150371+00:00"},{"alias_kind":"pith_short_8","alias_value":"LAPQPQCG","created_at":"2026-05-18T12:31:28.150371+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/LAPQPQCGF3S5VMBURGOAHGK6DQ","json":"https://pith.science/pith/LAPQPQCGF3S5VMBURGOAHGK6DQ.json","graph_json":"https://pith.science/api/pith-number/LAPQPQCGF3S5VMBURGOAHGK6DQ/graph.json","events_json":"https://pith.science/api/pith-number/LAPQPQCGF3S5VMBURGOAHGK6DQ/events.json","paper":"https://pith.science/paper/LAPQPQCG"},"agent_actions":{"view_html":"https://pith.science/pith/LAPQPQCGF3S5VMBURGOAHGK6DQ","download_json":"https://pith.science/pith/LAPQPQCGF3S5VMBURGOAHGK6DQ.json","view_paper":"https://pith.science/paper/LAPQPQCG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1712.08705&json=true","fetch_graph":"https://pith.science/api/pith-number/LAPQPQCGF3S5VMBURGOAHGK6DQ/graph.json","fetch_events":"https://pith.science/api/pith-number/LAPQPQCGF3S5VMBURGOAHGK6DQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LAPQPQCGF3S5VMBURGOAHGK6DQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LAPQPQCGF3S5VMBURGOAHGK6DQ/action/storage_attestation","attest_author":"https://pith.science/pith/LAPQPQCGF3S5VMBURGOAHGK6DQ/action/author_attestation","sign_citation":"https://pith.science/pith/LAPQPQCGF3S5VMBURGOAHGK6DQ/action/citation_signature","submit_replication":"https://pith.science/pith/LAPQPQCGF3S5VMBURGOAHGK6DQ/action/replication_record"}},"created_at":"2026-05-18T00:18:14.270593+00:00","updated_at":"2026-05-18T00:18:14.270593+00:00"}