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Ding","cross_cats":["hep-ex","hep-ph"],"headline":"Borexino data sets the tightest experimental limits on Pauli-forbidden transitions in 12C nuclei.","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2026-04-10T04:44:34Z","title":"New limits on the Pauli forbidden transitions in 12C nuclei obtained with the complete Borexino dataset"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2604.08950","kind":"arxiv","version":2},"verdict":{"created_at":"2026-05-10T16:55:42.156282Z","id":"a40cecac-b138-41fc-93e7-a77d29f241f6","model_set":{"reader":"grok-4.3"},"one_line_summary":"Borexino sets new lower limits on Pauli-forbidden transition lifetimes in 12C of 6.4e30 to 1.1e32 years and upper limits on violation strengths delta^2_gamma <=1e-57, delta^2_N <=7e-61, delta^2_beta <=9.6e-36 at 90% CL.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"Borexino data sets the tightest experimental limits on Pauli-forbidden transitions in 12C nuclei.","strongest_claim":"The most stringent experimental constraints to date on the lifetime of the 12C nucleus with respect to PEP-forbidden transitions were obtained: tau(12C -> 12C~ + gamma) >= 1.1e32 y, tau(12C -> 11B~ + p) >= 1.0e31 y, and similar for other channels, with delta^2 limits at 90% CL.","weakest_assumption":"The analysis assumes that background events are perfectly modeled and subtracted across all search channels and that the detector efficiency and energy response for any hypothetical signal are accurately known from calibration and simulation."}},"verdict_id":"a40cecac-b138-41fc-93e7-a77d29f241f6"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:f3da9f77c72cb5542acba371b8ced8ef2e1c91e43e0295497b3de18355bffd80","target":"record","created_at":"2026-07-02T01:17:30Z","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":"cd0a3254d3eaa59960fb037929b1796c1711058c8915cb2e0a68f9458753bbc6","cross_cats_sorted":["hep-ex","hep-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2026-04-10T04:44:34Z","title_canon_sha256":"7dfd7a9a3a475d9a766c0edf91867b42bc7379cbc8e711cddc2c6277efe607c8"},"schema_version":"1.0","source":{"id":"2604.08950","kind":"arxiv","version":2}},"canonical_sha256":"856014e7c8a2b5e75fa6f9b1982c4bc59b532a1236ef353a3853258d81e55c33","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"856014e7c8a2b5e75fa6f9b1982c4bc59b532a1236ef353a3853258d81e55c33","first_computed_at":"2026-07-02T01:17:30.982847Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-02T01:17:30.982847Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"chQSvTEx7VldqdOfqbTvAGb5zylTaTYRDYhPUyQO2KpVvKXrpbP8mZJxmgLqeSfEPxhy9eSdOeVWdFkFQix+DQ==","signature_status":"signed_v1","signed_at":"2026-07-02T01:17:30.983309Z","signed_message":"canonical_sha256_bytes"},"source_id":"2604.08950","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f3da9f77c72cb5542acba371b8ced8ef2e1c91e43e0295497b3de18355bffd80","sha256:53ef8759e636ea9ac5e2d175951059c9d60c5061c5a81d2bd3baffbd3a7b9c7f"],"state_sha256":"3e76e2eb4e04ea826dad2270cb843aee1318f6212395a6680a13663eb6650ea4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L6fNH06u0xS4XNntkejuXVrLneW3NRauaapqRTg3n7PKLabGDho+XipY84U0ap/c+OU5HXV5nKwHoNtJrvt+CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T10:07:01.671863Z","bundle_sha256":"38e5b6865cbfefa043475a249bd8ed41bf1b339fb621fcb67fb3275321beba5f"}}