{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:4CRJUJ437QZNHISGX3A4ZLHPDR","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":"c107c9a1aeb3e0c8d1bea253a9e4f559b4ef5d553df363a319bfcda2bb1f9c9a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2026-06-25T12:03:11Z","title_canon_sha256":"0706a22373e36489e9578c68a6bc60c489e697e62f81b11583ab9c8ae8b67c79"},"schema_version":"1.0","source":{"id":"2606.26926","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.26926","created_at":"2026-06-26T01:16:04Z"},{"alias_kind":"arxiv_version","alias_value":"2606.26926v1","created_at":"2026-06-26T01:16:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.26926","created_at":"2026-06-26T01:16:04Z"},{"alias_kind":"pith_short_12","alias_value":"4CRJUJ437QZN","created_at":"2026-06-26T01:16:04Z"},{"alias_kind":"pith_short_16","alias_value":"4CRJUJ437QZNHISG","created_at":"2026-06-26T01:16:04Z"},{"alias_kind":"pith_short_8","alias_value":"4CRJUJ43","created_at":"2026-06-26T01:16:04Z"}],"graph_snapshots":[{"event_id":"sha256:5e8c69bd8984aba1368a8ba15c5962beaf4011dc8b7569cabc969bc2157cfc02","target":"graph","created_at":"2026-06-26T01:16:04Z","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/2606.26926/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a detailed investigation of tritium beta decay up to third order (N2LO) in chiral effective field theory (EFT) using the LENPIC interactions. Unlike existing studies, we use nucleon-deuteron scattering observables to fix the low-energy constant D that governs the strength of the short-range contributions to the exchange axial current operator and three-nucleon forces. Surprisingly, the resulting parameter-free predictions for the tritium Gamow-Teller reduced matrix element are found to considerably overestimate its empirical value. This result remains robust against reasonable varia","authors_text":"D.F. Ramirez Jimenez, E. Epelbaum, H. Krebs, H. Witala, J. Golak, K. Topolnicki, P. Reinert, R. Skibinski, S. Heihoff","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2026-06-25T12:03:11Z","title":"Challenging chiral EFT with tritium beta decay"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.26926","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":"sha256:1b14ca3feee3525e88254c20994afc4f2f4c6555a67c94e11d88ef82deda9eaf","target":"record","created_at":"2026-06-26T01:16:04Z","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":"c107c9a1aeb3e0c8d1bea253a9e4f559b4ef5d553df363a319bfcda2bb1f9c9a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2026-06-25T12:03:11Z","title_canon_sha256":"0706a22373e36489e9578c68a6bc60c489e697e62f81b11583ab9c8ae8b67c79"},"schema_version":"1.0","source":{"id":"2606.26926","kind":"arxiv","version":1}},"canonical_sha256":"e0a29a279bfc32d3a246bec1ccacef1c493325770291a52cd42ff28393cdc5e0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e0a29a279bfc32d3a246bec1ccacef1c493325770291a52cd42ff28393cdc5e0","first_computed_at":"2026-06-26T01:16:04.299244Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-26T01:16:04.299244Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EtHLbW30+pnFlEDhJpzv3TSxX2WAy54E/cd2CL3QxkiAbR3w/6VmDKgNBULuqbOPdgLA8wzbp6DX0EZQDSXiDQ==","signature_status":"signed_v1","signed_at":"2026-06-26T01:16:04.299618Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.26926","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1b14ca3feee3525e88254c20994afc4f2f4c6555a67c94e11d88ef82deda9eaf","sha256:5e8c69bd8984aba1368a8ba15c5962beaf4011dc8b7569cabc969bc2157cfc02"],"state_sha256":"e27ff957af6f69eb3149d3c0451fc573c93423951bd523c4cdd5de942ffcb1ea"}