{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:CTRJZYVA4DWQYZYB44TI6VICZB","short_pith_number":"pith:CTRJZYVA","schema_version":"1.0","canonical_sha256":"14e29ce2a0e0ed0c6701e7268f5502c840becbc55339420f7cc551b62ccec70a","source":{"kind":"arxiv","id":"2604.10314","version":2},"attestation_state":"computed","paper":{"title":"Pion Weak Decay in a Magnetic Field","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Chiral perturbation theory calculation of pion decay in a magnetic field agrees with lattice QCD at large field strengths, with weak-field differences traced to pion decay constant values.","cross_cats":["hep-lat"],"primary_cat":"hep-ph","authors_text":"Brian C. Tiburzi, Prabal Adhikari","submitted_at":"2026-04-11T18:35:15Z","abstract_excerpt":"Pion decay width in a uniform magnetic background, constructed within chiral perturbation theory, is compared with lattice QCD for which results are available in the muon channel. While the results are consistent for large magnetic fields, the discrepancy observed for weak magnetic fields is largely due to differences in the pion decay constants."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2604.10314","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2026-04-11T18:35:15Z","cross_cats_sorted":["hep-lat"],"title_canon_sha256":"3256e5777d8f9bca798ae74bfd3babd8e79e6a9a7a9482fcbfaa8a24ed998c17","abstract_canon_sha256":"eb3e93bdeee3f18318b8e49e38b2e4b1e8f3ee026fec1b994ef82a42db2b129e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-01T02:03:40.425946Z","signature_b64":"DJvyKA5EPk/fOFJKUsecrPODogD7V5nSFnytXEeVfzdIIiaEr7dJeS0jkytTRz0nOzrT/JbOfJIOCImIfGyBBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"14e29ce2a0e0ed0c6701e7268f5502c840becbc55339420f7cc551b62ccec70a","last_reissued_at":"2026-06-01T02:03:40.425005Z","signature_status":"signed_v1","first_computed_at":"2026-06-01T02:03:40.425005Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Pion Weak Decay in a Magnetic Field","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Chiral perturbation theory calculation of pion decay in a magnetic field agrees with lattice QCD at large field strengths, with weak-field differences traced to pion decay constant values.","cross_cats":["hep-lat"],"primary_cat":"hep-ph","authors_text":"Brian C. Tiburzi, Prabal Adhikari","submitted_at":"2026-04-11T18:35:15Z","abstract_excerpt":"Pion decay width in a uniform magnetic background, constructed within chiral perturbation theory, is compared with lattice QCD for which results are available in the muon channel. While the results are consistent for large magnetic fields, the discrepancy observed for weak magnetic fields is largely due to differences in the pion decay constants."},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"While the results are consistent for large magnetic fields, the discrepancy observed for weak magnetic fields is largely due to differences in the pion decay constants.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that the chiral perturbation theory framework remains valid and accurate for describing the pion decay in the presence of a magnetic field across the range of field strengths considered, particularly at weak fields where higher-order effects might play a role.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Chiral perturbation theory predicts pion decay widths in magnetic fields that match lattice QCD at large field strengths but differ at weak fields primarily due to variations in the pion decay constant.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Chiral perturbation theory calculation of pion decay in a magnetic field agrees with lattice QCD at large field strengths, with weak-field differences traced to pion decay constant values.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"98967e4e29c748465a693135b8ae45766ab89e0e63c31dec90c63aad4898ee15"},"source":{"id":"2604.10314","kind":"arxiv","version":2},"verdict":{"id":"17fedbf1-7beb-46c7-a8cd-962948f7eb3d","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-10T15:43:14.115217Z","strongest_claim":"While the results are consistent for large magnetic fields, the discrepancy observed for weak magnetic fields is largely due to differences in the pion decay constants.","one_line_summary":"Chiral perturbation theory predicts pion decay widths in magnetic fields that match lattice QCD at large field strengths but differ at weak fields primarily due to variations in the pion decay constant.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that the chiral perturbation theory framework remains valid and accurate for describing the pion decay in the presence of a magnetic field across the range of field strengths considered, particularly at weak fields where higher-order effects might play a role.","pith_extraction_headline":"Chiral perturbation theory calculation of pion decay in a magnetic field agrees with lattice QCD at large field strengths, with weak-field differences traced to pion decay constant values."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.10314/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2604.10314","created_at":"2026-06-01T02:03:40.425124+00:00"},{"alias_kind":"arxiv_version","alias_value":"2604.10314v2","created_at":"2026-06-01T02:03:40.425124+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2604.10314","created_at":"2026-06-01T02:03:40.425124+00:00"},{"alias_kind":"pith_short_12","alias_value":"CTRJZYVA4DWQ","created_at":"2026-06-01T02:03:40.425124+00:00"},{"alias_kind":"pith_short_16","alias_value":"CTRJZYVA4DWQYZYB","created_at":"2026-06-01T02:03:40.425124+00:00"},{"alias_kind":"pith_short_8","alias_value":"CTRJZYVA","created_at":"2026-06-01T02:03:40.425124+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/CTRJZYVA4DWQYZYB44TI6VICZB","json":"https://pith.science/pith/CTRJZYVA4DWQYZYB44TI6VICZB.json","graph_json":"https://pith.science/api/pith-number/CTRJZYVA4DWQYZYB44TI6VICZB/graph.json","events_json":"https://pith.science/api/pith-number/CTRJZYVA4DWQYZYB44TI6VICZB/events.json","paper":"https://pith.science/paper/CTRJZYVA"},"agent_actions":{"view_html":"https://pith.science/pith/CTRJZYVA4DWQYZYB44TI6VICZB","download_json":"https://pith.science/pith/CTRJZYVA4DWQYZYB44TI6VICZB.json","view_paper":"https://pith.science/paper/CTRJZYVA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2604.10314&json=true","fetch_graph":"https://pith.science/api/pith-number/CTRJZYVA4DWQYZYB44TI6VICZB/graph.json","fetch_events":"https://pith.science/api/pith-number/CTRJZYVA4DWQYZYB44TI6VICZB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CTRJZYVA4DWQYZYB44TI6VICZB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CTRJZYVA4DWQYZYB44TI6VICZB/action/storage_attestation","attest_author":"https://pith.science/pith/CTRJZYVA4DWQYZYB44TI6VICZB/action/author_attestation","sign_citation":"https://pith.science/pith/CTRJZYVA4DWQYZYB44TI6VICZB/action/citation_signature","submit_replication":"https://pith.science/pith/CTRJZYVA4DWQYZYB44TI6VICZB/action/replication_record"}},"created_at":"2026-06-01T02:03:40.425124+00:00","updated_at":"2026-06-01T02:03:40.425124+00:00"}