{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:N4JYM67GFOOTW5NA4TH4WUHZVU","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":"2b21059423695bca993e0504a938eabb7421c50eabab8aeea6bcec85926a36bc","cross_cats_sorted":["hep-ph","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2013-08-18T00:10:48Z","title_canon_sha256":"3ff9de9fe8ab3ca83f4c52488f1b58a3dac13e3cf1c11745a3f43579e4e1bc51"},"schema_version":"1.0","source":{"id":"1308.3815","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.3815","created_at":"2026-05-18T02:54:37Z"},{"alias_kind":"arxiv_version","alias_value":"1308.3815v1","created_at":"2026-05-18T02:54:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.3815","created_at":"2026-05-18T02:54:37Z"},{"alias_kind":"pith_short_12","alias_value":"N4JYM67GFOOT","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"N4JYM67GFOOTW5NA","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"N4JYM67G","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:536693a13f011b13d22a88925675ae3e8d79ae7d0e2475978c4d897c15bfd677","target":"graph","created_at":"2026-05-18T02:54:37Z","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":"We report a direct measurement of the Q-value of the neutrinoless double-beta-decay candidate 48Ca at the TITAN Penning-trap mass spectrometer, with the result that Q = 4267.98(32) keV. We measured the masses of both the mother and daughter nuclides, and in the latter case found a 1 keV deviation from the literature value. In addition to the Q-value, we also present results of a new calculation of the neutrinoless double-beta-decay nuclear matrix element of 48Ca. Using diagrammatic many-body perturbation theory to second order to account for physics outside the valence space, we constructed an","authors_text":"A. A. Kwiatkowski, A. Chaudhuri, A. Grossheim, A. Lennarz, A. T. Gallant, B. E. Schultz, J. D. Holt, J. Dilling, J. Engel, K. Zuber, M. C. Simon, M. Eibach, M. Horoi, M. R. Pearson, R.A. Senkov, T. Brunner, T. D. Macdonald, U. Chowdhury, V. V. Simon","cross_cats":["hep-ph","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2013-08-18T00:10:48Z","title":"New determination of double-beta-decay properties in 48Ca: high-precision Q-value measurement and improved nuclear matrix element calculations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.3815","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:d6961e1effd59332602a9447af349d1cadc5291f5deaf12a4c0b05d200be2511","target":"record","created_at":"2026-05-18T02:54:37Z","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":"2b21059423695bca993e0504a938eabb7421c50eabab8aeea6bcec85926a36bc","cross_cats_sorted":["hep-ph","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2013-08-18T00:10:48Z","title_canon_sha256":"3ff9de9fe8ab3ca83f4c52488f1b58a3dac13e3cf1c11745a3f43579e4e1bc51"},"schema_version":"1.0","source":{"id":"1308.3815","kind":"arxiv","version":1}},"canonical_sha256":"6f13867be62b9d3b75a0e4cfcb50f9ad01e23d8bb74741413b426bc4122c60d7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6f13867be62b9d3b75a0e4cfcb50f9ad01e23d8bb74741413b426bc4122c60d7","first_computed_at":"2026-05-18T02:54:37.866450Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:54:37.866450Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"k8u4lVy9v/GVbzx7lh/UtfLYrDlG3ItEFKJNZftT+0SQuprVjAMurNa47BjQQ2jKc41J5bT6VyhuI7xaHkY9AA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:54:37.867073Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.3815","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d6961e1effd59332602a9447af349d1cadc5291f5deaf12a4c0b05d200be2511","sha256:536693a13f011b13d22a88925675ae3e8d79ae7d0e2475978c4d897c15bfd677"],"state_sha256":"6ccf609de049460eabbd5292aaedd188e0046f6317957191e339bfbbc6c7a9ec"}