{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:HJ7SGUACS3HKMRZEXE3IUADTSP","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":"674716ec62a19684345613c31d48568463b992e2c1e6a7565cbf8688527f984a","cross_cats_sorted":["hep-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2026-06-26T16:13:44Z","title_canon_sha256":"70c8b679f6abe979bf64ca1ce9a48a5a367b1b740d8b569b25501dbcbfb01270"},"schema_version":"1.0","source":{"id":"2606.28224","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.28224","created_at":"2026-06-29T01:15:09Z"},{"alias_kind":"arxiv_version","alias_value":"2606.28224v1","created_at":"2026-06-29T01:15:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.28224","created_at":"2026-06-29T01:15:09Z"},{"alias_kind":"pith_short_12","alias_value":"HJ7SGUACS3HK","created_at":"2026-06-29T01:15:09Z"},{"alias_kind":"pith_short_16","alias_value":"HJ7SGUACS3HKMRZE","created_at":"2026-06-29T01:15:09Z"},{"alias_kind":"pith_short_8","alias_value":"HJ7SGUAC","created_at":"2026-06-29T01:15:09Z"}],"graph_snapshots":[{"event_id":"sha256:834ed9b65b8d94fdcf8558cfa829edaf938fcee2a48ea0ea1b9ac03975064d33","target":"graph","created_at":"2026-06-29T01:15:09Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2606.28224/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Reliable nuclear matrix elements (NMEs) are essential for interpreting double-beta-decay experiments and for connecting measured or constrained half-lives to the underlying weak-interaction physics. The two-neutrino mode ($2\\nu\\beta\\beta$) is allowed by the Standard Model and has been observed in several nuclei, whereas the neutrinoless mode ($0\\nu\\beta\\beta$) remains the key experimental signature of lepton-number violation and Majorana neutrino masses. Recent statistical shell-model studies indicate a strong correlation between the $2\\nu\\beta\\beta$ and $0\\nu\\beta\\beta$ NMEs, making accurate ","authors_text":"Mihai Horoi","cross_cats":["hep-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2026-06-26T16:13:44Z","title":"Efficient calculation of two-neutrino double-beta-decay nuclear matrix elements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.28224","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:e44993614390bb8a821817a7ae4ab25dd529ae5962d71a3e2cca59b745cbbe22","target":"record","created_at":"2026-06-29T01:15:09Z","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":"674716ec62a19684345613c31d48568463b992e2c1e6a7565cbf8688527f984a","cross_cats_sorted":["hep-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2026-06-26T16:13:44Z","title_canon_sha256":"70c8b679f6abe979bf64ca1ce9a48a5a367b1b740d8b569b25501dbcbfb01270"},"schema_version":"1.0","source":{"id":"2606.28224","kind":"arxiv","version":1}},"canonical_sha256":"3a7f23500296cea64724b9368a007393fbb3c19322e611e8abb608c3bdb1329c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3a7f23500296cea64724b9368a007393fbb3c19322e611e8abb608c3bdb1329c","first_computed_at":"2026-06-29T01:15:09.744550Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-29T01:15:09.744550Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ouR17Eu4WTfEUtmPyZ2M4hV5vj/3XK70F7ToLBtCfNPwC/p32iu6ARBMgS0E+jotompt5joBpZcepxiwMAr3Bg==","signature_status":"signed_v1","signed_at":"2026-06-29T01:15:09.744952Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.28224","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e44993614390bb8a821817a7ae4ab25dd529ae5962d71a3e2cca59b745cbbe22","sha256:834ed9b65b8d94fdcf8558cfa829edaf938fcee2a48ea0ea1b9ac03975064d33"],"state_sha256":"4f6dbc286bdfc6267b8b0f76f84a737a0205851b55292365cfeb2109373e6ca0"}