{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:WI4WFLHQEUJNLQWXV3NWUGMWFU","short_pith_number":"pith:WI4WFLHQ","canonical_record":{"source":{"id":"1601.01624","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2016-01-07T17:59:22Z","cross_cats_sorted":["hep-ph","nucl-ex","nucl-th"],"title_canon_sha256":"531e936d6face5bb5bf073d89f3844df58073b571130d0c11c6b1b5aa8de8c3c","abstract_canon_sha256":"92349ddc7e0618044df8ca9f41069eabfad8deb33d6b8fde8ab8000698cddfc4"},"schema_version":"1.0"},"canonical_sha256":"b23962acf02512d5c2d7aedb6a19962d06e354eb127a02dc26e6a9eba2d49cd9","source":{"kind":"arxiv","id":"1601.01624","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.01624","created_at":"2026-05-18T01:11:45Z"},{"alias_kind":"arxiv_version","alias_value":"1601.01624v2","created_at":"2026-05-18T01:11:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.01624","created_at":"2026-05-18T01:11:45Z"},{"alias_kind":"pith_short_12","alias_value":"WI4WFLHQEUJN","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"WI4WFLHQEUJNLQWX","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"WI4WFLHQ","created_at":"2026-05-18T12:30:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:WI4WFLHQEUJNLQWXV3NWUGMWFU","target":"record","payload":{"canonical_record":{"source":{"id":"1601.01624","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2016-01-07T17:59:22Z","cross_cats_sorted":["hep-ph","nucl-ex","nucl-th"],"title_canon_sha256":"531e936d6face5bb5bf073d89f3844df58073b571130d0c11c6b1b5aa8de8c3c","abstract_canon_sha256":"92349ddc7e0618044df8ca9f41069eabfad8deb33d6b8fde8ab8000698cddfc4"},"schema_version":"1.0"},"canonical_sha256":"b23962acf02512d5c2d7aedb6a19962d06e354eb127a02dc26e6a9eba2d49cd9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:45.183385Z","signature_b64":"o7Ss3DbgRmhi/X38FpeBogUfsRXQWpogznvSPDgLoR1jdxzsc7R4hJPUoEtQFEF1b+6Fu6o6+ADcf8s1iw06DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b23962acf02512d5c2d7aedb6a19962d06e354eb127a02dc26e6a9eba2d49cd9","last_reissued_at":"2026-05-18T01:11:45.183016Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:45.183016Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.01624","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:11:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fOCAD250TSklerROmvw3FPER4PEtNH+hw9OylASJmdfOp2tPBTYUCa9GHd6jvKTnMRhUV9LIg0FZ2KT5Z6phCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:44:02.689587Z"},"content_sha256":"862c380f1a563f47560f128f40791bce06f8ae43753b5fb96dec1edde90cb81b","schema_version":"1.0","event_id":"sha256:862c380f1a563f47560f128f40791bce06f8ae43753b5fb96dec1edde90cb81b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:WI4WFLHQEUJNLQWXV3NWUGMWFU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Direct Evaluation of the Quark Content of Nucleons from Lattice QCD at the Physical Point","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","nucl-ex","nucl-th"],"primary_cat":"hep-lat","authors_text":"A. Abdel-Rehim (The Cyprus Inst.), A. Vaquero Aviles-Casco (INFN, C. Alexandrou (Univ. of Cyprus, Ch. Kallidonis (The Cyprus Inst.), G.Koutsou (The Cyprus Inst.), K. Hadjiyiannakou (Univ. of Cyprus, K. Jansen (DESY-Zeuthen), M. Constantinou (The Cyprus Inst.), Milan), The Cyprus Inst.)","submitted_at":"2016-01-07T17:59:22Z","abstract_excerpt":"We evaluate the light, strange and charm scalar content of the nucleon using one lattice QCD ensemble generated with two degenerate light quarks with mass fixed to their physical value. We use improved techniques to evaluate the disconnected quark loops to sufficient accuracy to determine the strange and charm nucleon $\\sigma$-terms. in addition to the light quark content $\\sigma_{\\pi N}$. We find $\\sigma_{\\pi N}$=$37.2(2.6)(^{4.7}_{2.9})$ MeV $\\sigma_{s}$=$41.1(8.2)(^{7.8}_{5.8})$ MeV and $\\sigma_c$=$79(21)(^{12}_{\\phantom{1}8})$ MeV, where the first error is statistical and the second is the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.01624","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:11:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e2A4y1APJMjU0583ClcGOwh6kH5Evz8NkhVgFvez2Iwr91jvI6wIEgea5cEm0UnzSHskXaCwqgfVRFKYlLrEDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:44:02.690005Z"},"content_sha256":"ff7ab07dcb7877ad0453e5e251979576cd920c0f567826a16721f0f09da7904f","schema_version":"1.0","event_id":"sha256:ff7ab07dcb7877ad0453e5e251979576cd920c0f567826a16721f0f09da7904f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WI4WFLHQEUJNLQWXV3NWUGMWFU/bundle.json","state_url":"https://pith.science/pith/WI4WFLHQEUJNLQWXV3NWUGMWFU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WI4WFLHQEUJNLQWXV3NWUGMWFU/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-26T04:44:02Z","links":{"resolver":"https://pith.science/pith/WI4WFLHQEUJNLQWXV3NWUGMWFU","bundle":"https://pith.science/pith/WI4WFLHQEUJNLQWXV3NWUGMWFU/bundle.json","state":"https://pith.science/pith/WI4WFLHQEUJNLQWXV3NWUGMWFU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WI4WFLHQEUJNLQWXV3NWUGMWFU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:WI4WFLHQEUJNLQWXV3NWUGMWFU","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":"92349ddc7e0618044df8ca9f41069eabfad8deb33d6b8fde8ab8000698cddfc4","cross_cats_sorted":["hep-ph","nucl-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2016-01-07T17:59:22Z","title_canon_sha256":"531e936d6face5bb5bf073d89f3844df58073b571130d0c11c6b1b5aa8de8c3c"},"schema_version":"1.0","source":{"id":"1601.01624","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.01624","created_at":"2026-05-18T01:11:45Z"},{"alias_kind":"arxiv_version","alias_value":"1601.01624v2","created_at":"2026-05-18T01:11:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.01624","created_at":"2026-05-18T01:11:45Z"},{"alias_kind":"pith_short_12","alias_value":"WI4WFLHQEUJN","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"WI4WFLHQEUJNLQWX","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"WI4WFLHQ","created_at":"2026-05-18T12:30:48Z"}],"graph_snapshots":[{"event_id":"sha256:ff7ab07dcb7877ad0453e5e251979576cd920c0f567826a16721f0f09da7904f","target":"graph","created_at":"2026-05-18T01:11:45Z","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 evaluate the light, strange and charm scalar content of the nucleon using one lattice QCD ensemble generated with two degenerate light quarks with mass fixed to their physical value. We use improved techniques to evaluate the disconnected quark loops to sufficient accuracy to determine the strange and charm nucleon $\\sigma$-terms. in addition to the light quark content $\\sigma_{\\pi N}$. We find $\\sigma_{\\pi N}$=$37.2(2.6)(^{4.7}_{2.9})$ MeV $\\sigma_{s}$=$41.1(8.2)(^{7.8}_{5.8})$ MeV and $\\sigma_c$=$79(21)(^{12}_{\\phantom{1}8})$ MeV, where the first error is statistical and the second is the","authors_text":"A. Abdel-Rehim (The Cyprus Inst.), A. Vaquero Aviles-Casco (INFN, C. Alexandrou (Univ. of Cyprus, Ch. Kallidonis (The Cyprus Inst.), G.Koutsou (The Cyprus Inst.), K. Hadjiyiannakou (Univ. of Cyprus, K. Jansen (DESY-Zeuthen), M. Constantinou (The Cyprus Inst.), Milan), The Cyprus Inst.)","cross_cats":["hep-ph","nucl-ex","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2016-01-07T17:59:22Z","title":"Direct Evaluation of the Quark Content of Nucleons from Lattice QCD at the Physical Point"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.01624","kind":"arxiv","version":2},"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":"sha256:862c380f1a563f47560f128f40791bce06f8ae43753b5fb96dec1edde90cb81b","target":"record","created_at":"2026-05-18T01:11:45Z","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":"92349ddc7e0618044df8ca9f41069eabfad8deb33d6b8fde8ab8000698cddfc4","cross_cats_sorted":["hep-ph","nucl-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2016-01-07T17:59:22Z","title_canon_sha256":"531e936d6face5bb5bf073d89f3844df58073b571130d0c11c6b1b5aa8de8c3c"},"schema_version":"1.0","source":{"id":"1601.01624","kind":"arxiv","version":2}},"canonical_sha256":"b23962acf02512d5c2d7aedb6a19962d06e354eb127a02dc26e6a9eba2d49cd9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b23962acf02512d5c2d7aedb6a19962d06e354eb127a02dc26e6a9eba2d49cd9","first_computed_at":"2026-05-18T01:11:45.183016Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:45.183016Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o7Ss3DbgRmhi/X38FpeBogUfsRXQWpogznvSPDgLoR1jdxzsc7R4hJPUoEtQFEF1b+6Fu6o6+ADcf8s1iw06DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:45.183385Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.01624","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:862c380f1a563f47560f128f40791bce06f8ae43753b5fb96dec1edde90cb81b","sha256:ff7ab07dcb7877ad0453e5e251979576cd920c0f567826a16721f0f09da7904f"],"state_sha256":"53760dd2352139cc58a4802973b0230c595a32f0831106d0d4ec4fe9bf11e456"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qq7x9HH5hcc0+3DbdktdQTalLN+iNUwLp++PmNWjrA9A/KrvPYRjwrJ/F6CDUrf4Tfv42JFJAeGuEzs72zZ3AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T04:44:02.693698Z","bundle_sha256":"4bdda1f969c9a355acb23ec6735250866a577a5f59e1e3e356df26b7c8c53b9a"}}