{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:AKRJ3O5PHPQKCRX7NEM4X4M4N6","short_pith_number":"pith:AKRJ3O5P","canonical_record":{"source":{"id":"1901.06959","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-01-21T15:22:53Z","cross_cats_sorted":[],"title_canon_sha256":"9154eaea5fc01c20f1e9e9f5f2544b96dda2ec92319b9054aaaf0fa35c70391c","abstract_canon_sha256":"498ee219d8a8943f7e56154a1d27a580651d662c0cbfbc4de747160d59d264f4"},"schema_version":"1.0"},"canonical_sha256":"02a29dbbaf3be0a146ff6919cbf19c6f8e9c9018bc4f963d0461ada02723c4d0","source":{"kind":"arxiv","id":"1901.06959","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.06959","created_at":"2026-05-17T23:55:48Z"},{"alias_kind":"arxiv_version","alias_value":"1901.06959v1","created_at":"2026-05-17T23:55:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.06959","created_at":"2026-05-17T23:55:48Z"},{"alias_kind":"pith_short_12","alias_value":"AKRJ3O5PHPQK","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"AKRJ3O5PHPQKCRX7","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"AKRJ3O5P","created_at":"2026-05-18T12:33:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:AKRJ3O5PHPQKCRX7NEM4X4M4N6","target":"record","payload":{"canonical_record":{"source":{"id":"1901.06959","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-01-21T15:22:53Z","cross_cats_sorted":[],"title_canon_sha256":"9154eaea5fc01c20f1e9e9f5f2544b96dda2ec92319b9054aaaf0fa35c70391c","abstract_canon_sha256":"498ee219d8a8943f7e56154a1d27a580651d662c0cbfbc4de747160d59d264f4"},"schema_version":"1.0"},"canonical_sha256":"02a29dbbaf3be0a146ff6919cbf19c6f8e9c9018bc4f963d0461ada02723c4d0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:55:48.564251Z","signature_b64":"bCR7IqHJr3vFF7zDW7+u/NNNLRe7Th+1uUH1FbyvxbtYEP9KqGNqMhPtAfNWG7+lg6vy4gfIvzCCrXAqE16hAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"02a29dbbaf3be0a146ff6919cbf19c6f8e9c9018bc4f963d0461ada02723c4d0","last_reissued_at":"2026-05-17T23:55:48.563784Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:55:48.563784Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.06959","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:55:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u3HeMFo1iRKFjaWM1rzZFJvW+6RV476CRYXNxFzS1UQV4/0aVpH+Ol4vWYcOuxKOKaYAN2gV04fG2aCgu0esBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T13:50:14.050353Z"},"content_sha256":"1452c278ab0b74385a70deb22c54d4683ee35c0b7599c2d4a2974d740fd2b0a5","schema_version":"1.0","event_id":"sha256:1452c278ab0b74385a70deb22c54d4683ee35c0b7599c2d4a2974d740fd2b0a5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:AKRJ3O5PHPQKCRX7NEM4X4M4N6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The $g$ factor of bound electrons as a test for physics beyond the Standard Model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"C. H. Keitel, V. Debierre, Z. Harman","submitted_at":"2019-01-21T15:22:53Z","abstract_excerpt":"The use of high-precision measurements of the $g$ factor of few-electron ions and its isotope shifts is put forward as a probe for physics beyond the Standard Model. The contribution of a hypothetical fifth fundamental force to the $g$ factor is calculated for the ground state of H-like, Li-like and B-like ions, and employed to derive bounds on the parameters of that force. The weighted difference and especially the isotope shift of $g$ factors are used in order to increase the experimental sensitivity to the new physics contribution. It is found that, combining measurements from four differen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.06959","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:55:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ysdDXU3Yd6vVvgTQOLODlu7aRUoDliuNxrEerRxJW963aED2avdi9hoSpSjkGja2h8VkLu1uG+Vmr+BkBLU/BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T13:50:14.050693Z"},"content_sha256":"7abc7aa4e245bb9c678691f8baa8b36817ae51fe5949ae3f5304512607f3e498","schema_version":"1.0","event_id":"sha256:7abc7aa4e245bb9c678691f8baa8b36817ae51fe5949ae3f5304512607f3e498"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AKRJ3O5PHPQKCRX7NEM4X4M4N6/bundle.json","state_url":"https://pith.science/pith/AKRJ3O5PHPQKCRX7NEM4X4M4N6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AKRJ3O5PHPQKCRX7NEM4X4M4N6/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-29T13:50:14Z","links":{"resolver":"https://pith.science/pith/AKRJ3O5PHPQKCRX7NEM4X4M4N6","bundle":"https://pith.science/pith/AKRJ3O5PHPQKCRX7NEM4X4M4N6/bundle.json","state":"https://pith.science/pith/AKRJ3O5PHPQKCRX7NEM4X4M4N6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AKRJ3O5PHPQKCRX7NEM4X4M4N6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:AKRJ3O5PHPQKCRX7NEM4X4M4N6","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"498ee219d8a8943f7e56154a1d27a580651d662c0cbfbc4de747160d59d264f4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-01-21T15:22:53Z","title_canon_sha256":"9154eaea5fc01c20f1e9e9f5f2544b96dda2ec92319b9054aaaf0fa35c70391c"},"schema_version":"1.0","source":{"id":"1901.06959","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.06959","created_at":"2026-05-17T23:55:48Z"},{"alias_kind":"arxiv_version","alias_value":"1901.06959v1","created_at":"2026-05-17T23:55:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.06959","created_at":"2026-05-17T23:55:48Z"},{"alias_kind":"pith_short_12","alias_value":"AKRJ3O5PHPQK","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"AKRJ3O5PHPQKCRX7","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"AKRJ3O5P","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:7abc7aa4e245bb9c678691f8baa8b36817ae51fe5949ae3f5304512607f3e498","target":"graph","created_at":"2026-05-17T23:55:48Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The use of high-precision measurements of the $g$ factor of few-electron ions and its isotope shifts is put forward as a probe for physics beyond the Standard Model. The contribution of a hypothetical fifth fundamental force to the $g$ factor is calculated for the ground state of H-like, Li-like and B-like ions, and employed to derive bounds on the parameters of that force. The weighted difference and especially the isotope shift of $g$ factors are used in order to increase the experimental sensitivity to the new physics contribution. It is found that, combining measurements from four differen","authors_text":"C. H. Keitel, V. Debierre, Z. Harman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-01-21T15:22:53Z","title":"The $g$ factor of bound electrons as a test for physics beyond the Standard Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.06959","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:1452c278ab0b74385a70deb22c54d4683ee35c0b7599c2d4a2974d740fd2b0a5","target":"record","created_at":"2026-05-17T23:55:48Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"498ee219d8a8943f7e56154a1d27a580651d662c0cbfbc4de747160d59d264f4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-01-21T15:22:53Z","title_canon_sha256":"9154eaea5fc01c20f1e9e9f5f2544b96dda2ec92319b9054aaaf0fa35c70391c"},"schema_version":"1.0","source":{"id":"1901.06959","kind":"arxiv","version":1}},"canonical_sha256":"02a29dbbaf3be0a146ff6919cbf19c6f8e9c9018bc4f963d0461ada02723c4d0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"02a29dbbaf3be0a146ff6919cbf19c6f8e9c9018bc4f963d0461ada02723c4d0","first_computed_at":"2026-05-17T23:55:48.563784Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:55:48.563784Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bCR7IqHJr3vFF7zDW7+u/NNNLRe7Th+1uUH1FbyvxbtYEP9KqGNqMhPtAfNWG7+lg6vy4gfIvzCCrXAqE16hAw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:55:48.564251Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.06959","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1452c278ab0b74385a70deb22c54d4683ee35c0b7599c2d4a2974d740fd2b0a5","sha256:7abc7aa4e245bb9c678691f8baa8b36817ae51fe5949ae3f5304512607f3e498"],"state_sha256":"5521a5ae8afebc10c400cbb006efe1d0b8e8feafbeb531b1e1cd6b7e3e78cd5b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B9KWFIfUdddMDuRHthM/8qbLDeRwg/ZfTt7SFgFkt0DOgIiTtQskDbc0JhFjhlomMBQ4ZLBXpnPvqTxVc6wnBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T13:50:14.052668Z","bundle_sha256":"6d06fb54be575a11dd64edfb94822a3b19d7ef930811ff2342c5982193637f92"}}