{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:CBXDJADGAA27AOHHLKAO75VA5Q","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":"9f3dc06ba41aa8915d513f95b59057cb4a15c90dcf86f280ad2e9fef1f556804","cross_cats_sorted":["hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2017-01-18T22:49:05Z","title_canon_sha256":"372b7642fcaf10d5d5be9b452c4a31436d0b566cbbdde6171bd47c5e0ceb92fa"},"schema_version":"1.0","source":{"id":"1701.05254","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.05254","created_at":"2026-05-18T00:52:22Z"},{"alias_kind":"arxiv_version","alias_value":"1701.05254v1","created_at":"2026-05-18T00:52:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.05254","created_at":"2026-05-18T00:52:22Z"},{"alias_kind":"pith_short_12","alias_value":"CBXDJADGAA27","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"CBXDJADGAA27AOHH","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"CBXDJADG","created_at":"2026-05-18T12:31:10Z"}],"graph_snapshots":[{"event_id":"sha256:39684b15e75b5ee05a451108b267fb42aec160c9d426cf92b35a9996afa32a80","target":"graph","created_at":"2026-05-18T00:52:22Z","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":"Allowed charged $\\pi$ meson decays are characterized by simple dynamics, few available decay channels, mainly into leptons, and extremely well controlled radiative and loop corrections. In that sense, pion decays represent a veritable triumph of the standard model (SM) of elementary particles and interactions. This relative theoretical simplicity makes charged pion decays a sensitive means for testing the underlying symmetries and the universality of weak fermion couplings, as well as for studying pion structure and chiral dynamics. Even after considerable recent improvements, experimental pre","authors_text":"A.M. Rozhdestvensky, A. Palladino, A.S. Korenchenko, A. van der Schaaf, C.J. Glaser, D. Mzhavia, D. Pocanic, E. Frlez, E.P. Velicheva, I. Supek, L.P. Alonzi, M. Bychkov, M.C. Lehman, M.G. Vitz, M. Korolija, N.A. Kuchinsky, N.P. Kravchuk, N.V. Khomutov, P. Robmann, P. Truoel, S.M. Korenchenko, T. Kozlowski, V.A. Baranov, V.A. Kalinnikov, V.P. Volnykh, W. Bertl, Yu.M. Bystritsky","cross_cats":["hep-ph","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2017-01-18T22:49:05Z","title":"PEN: a low energy test of lepton universality"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.05254","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":"sha256:1c227cdbe8381d6b144613d1f83439afd4cdbf6efa13c120e3a8d30364e79fb7","target":"record","created_at":"2026-05-18T00:52:22Z","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":"9f3dc06ba41aa8915d513f95b59057cb4a15c90dcf86f280ad2e9fef1f556804","cross_cats_sorted":["hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2017-01-18T22:49:05Z","title_canon_sha256":"372b7642fcaf10d5d5be9b452c4a31436d0b566cbbdde6171bd47c5e0ceb92fa"},"schema_version":"1.0","source":{"id":"1701.05254","kind":"arxiv","version":1}},"canonical_sha256":"106e3480660035f038e75a80eff6a0ec15c4201a73c4866d10427f47c72fb7f0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"106e3480660035f038e75a80eff6a0ec15c4201a73c4866d10427f47c72fb7f0","first_computed_at":"2026-05-18T00:52:22.115199Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:22.115199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"t4fBiHwiQYhtRw+QN0V/vuFxbQiavXBRrsDKsAP/HY8CX8asio89vkK6YBmsno3kuHDwQyrr5Milyv/CN6JcBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:22.115893Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.05254","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1c227cdbe8381d6b144613d1f83439afd4cdbf6efa13c120e3a8d30364e79fb7","sha256:39684b15e75b5ee05a451108b267fb42aec160c9d426cf92b35a9996afa32a80"],"state_sha256":"4bf99231e0bad7aa4209c84f17a44f2d35b91e656161be9b2e7213ba35884307"}