{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:L2HWWZETQYLBDJSPVSYX4EGBA6","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":"dbd58edd9aaf5c6b242d0592b1a0abb9f4ad938dc88d0c89870a4f2f5cf8f147","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2011-08-04T08:54:26Z","title_canon_sha256":"5f6402312394d0774772b5a75490e7d6e02055fda1ecb67346edd9dfbe509a8e"},"schema_version":"1.0","source":{"id":"1108.1021","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.1021","created_at":"2026-05-18T04:10:12Z"},{"alias_kind":"arxiv_version","alias_value":"1108.1021v1","created_at":"2026-05-18T04:10:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.1021","created_at":"2026-05-18T04:10:12Z"},{"alias_kind":"pith_short_12","alias_value":"L2HWWZETQYLB","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_16","alias_value":"L2HWWZETQYLBDJSP","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_8","alias_value":"L2HWWZET","created_at":"2026-05-18T12:26:34Z"}],"graph_snapshots":[{"event_id":"sha256:e11432729832fc8ff95275a3cc98b7d25adc216f9510fc5fe528b3fc3a787452","target":"graph","created_at":"2026-05-18T04:10:12Z","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":"We compute the matrix elements of the electromagnetic (EM) operator (\\bar{s} F{\\mu \\nu} \\sigma{\\mu \\nu} d) between kaon and pion states, using lattice QCD with maximally twisted-mass fermions and two flavors of dynamical quarks (Nf = 2). The operator is renormalized non-perturbatively in the RI'/MOM scheme and our simulations cover pion masses as light as 270 MeV and three values of the lattice spacing from ~ 0.07 up to ~ 0.1 fm. At the physical point our result for the corresponding tensor form factor at zero-momentum transfer is fT{K\\pi}(0) = 0.417 (14_stat) (5_syst), where the systematic er","authors_text":"G. Martinelli, I. Baum, L. Orifici, S. Simula, V. Lubicz","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2011-08-04T08:54:26Z","title":"Matrix elements of the electromagnetic operator between kaon and pion states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.1021","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":"sha256:3e2488c0e5df56d35e6004f6218d5599e766f934b82ba5bf6f8be4bc11b51445","target":"record","created_at":"2026-05-18T04:10:12Z","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":"dbd58edd9aaf5c6b242d0592b1a0abb9f4ad938dc88d0c89870a4f2f5cf8f147","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2011-08-04T08:54:26Z","title_canon_sha256":"5f6402312394d0774772b5a75490e7d6e02055fda1ecb67346edd9dfbe509a8e"},"schema_version":"1.0","source":{"id":"1108.1021","kind":"arxiv","version":1}},"canonical_sha256":"5e8f6b6493861611a64facb17e10c107995e4b2f5780aab4209045dfa92188d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e8f6b6493861611a64facb17e10c107995e4b2f5780aab4209045dfa92188d3","first_computed_at":"2026-05-18T04:10:12.001456Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:10:12.001456Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XcMJz1NLxz4DRWTsPvjaOUvIigqjRCxNxZu4ZmN6DPjOEWIJ3kCY88272f8dftGffva9lc5xNigK8ZHE3gveBg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:10:12.002301Z","signed_message":"canonical_sha256_bytes"},"source_id":"1108.1021","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3e2488c0e5df56d35e6004f6218d5599e766f934b82ba5bf6f8be4bc11b51445","sha256:e11432729832fc8ff95275a3cc98b7d25adc216f9510fc5fe528b3fc3a787452"],"state_sha256":"04eaa5d0a7537b8af70ddb9210517cb00419740b60b489b10bd99d01ce0b4836"}