{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:YS2UBCHNOFNBOOLKVA6YOM6H3C","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":"fc9d38c39f5ef5434b774b12de8a456911c680f0ad8922a84fc06991a5a7f937","cross_cats_sorted":["hep-lat"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2010-12-03T09:11:29Z","title_canon_sha256":"1a48607318b6925232803d9cb6406e7bea42f649fac8c1d71342d87d0a1fd131"},"schema_version":"1.0","source":{"id":"1012.0666","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.0666","created_at":"2026-05-18T04:30:05Z"},{"alias_kind":"arxiv_version","alias_value":"1012.0666v1","created_at":"2026-05-18T04:30:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.0666","created_at":"2026-05-18T04:30:05Z"},{"alias_kind":"pith_short_12","alias_value":"YS2UBCHNOFNB","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"YS2UBCHNOFNBOOLK","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"YS2UBCHN","created_at":"2026-05-18T12:26:17Z"}],"graph_snapshots":[{"event_id":"sha256:34db7c7c383fc90b7602ede3c54cc6467191e359c49be627deb828ab0a3a0cd8","target":"graph","created_at":"2026-05-18T04:30:05Z","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 study the light quark mass dependence of the $D$ and $D_s$ meson decay constants, $f_D$ and $f_{D_s}$, using a covariant formulation of chiral perturbation theory ($\\chi$PT) at next-to-next-to-leading order (NNLO). Using the HPQCD lattice results for the $D$($D_s$) decay constants as a benchmark we show that covariant $\\chi$PT can describe the HPQCD results better than heavy meson $\\chi$PT (HM$\\chi$PT) at both NLO and NNLO. Within the same framework, taking into account sub-leading ($1/m_Q$, with $m_Q$ the heavy quark mass) corrections to the values of the low-energy constants and employing","authors_text":"L.S. Geng, M. Altenbuchinger, W. Weise","cross_cats":["hep-lat"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2010-12-03T09:11:29Z","title":"Light quark mass dependence of the $D$ and $D_s$ decay constants"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.0666","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:d79b604dba44f3fedd0a4c5cb198ed7236634c400c9bca691e33d48b8e5fcc28","target":"record","created_at":"2026-05-18T04:30:05Z","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":"fc9d38c39f5ef5434b774b12de8a456911c680f0ad8922a84fc06991a5a7f937","cross_cats_sorted":["hep-lat"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2010-12-03T09:11:29Z","title_canon_sha256":"1a48607318b6925232803d9cb6406e7bea42f649fac8c1d71342d87d0a1fd131"},"schema_version":"1.0","source":{"id":"1012.0666","kind":"arxiv","version":1}},"canonical_sha256":"c4b54088ed715a17396aa83d8733c7d898b523de5fcf1bad3e7456f9d3fbd100","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c4b54088ed715a17396aa83d8733c7d898b523de5fcf1bad3e7456f9d3fbd100","first_computed_at":"2026-05-18T04:30:05.184575Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:30:05.184575Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZVyX/Gd7T9qzLO3wYV3f5vxwdGQdFYv7AHXBg9qYHXuM+R1durHjh1avAks18LrJRJnkTIDBNCv2jUdtYsELDg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:30:05.185261Z","signed_message":"canonical_sha256_bytes"},"source_id":"1012.0666","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d79b604dba44f3fedd0a4c5cb198ed7236634c400c9bca691e33d48b8e5fcc28","sha256:34db7c7c383fc90b7602ede3c54cc6467191e359c49be627deb828ab0a3a0cd8"],"state_sha256":"116eb785ff8e4df45974ea6f55d80f51e714796b0fb5c4933c51e2bd5883136b"}