{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:GHUBH3CBOU3L7C5BRWB2OAIGMS","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":"de304e7e61733ae0f95beb0f83712a7fb4dbb9b9c25f22bc2ea40cdc7e936e47","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2021-11-16T09:00:06Z","title_canon_sha256":"f5d7f226b5a20a3f847394de35faa2376cae704e3f02e5d62695cecf3e26c6b0"},"schema_version":"1.0","source":{"id":"2111.08306","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.08306","created_at":"2026-07-05T04:07:27Z"},{"alias_kind":"arxiv_version","alias_value":"2111.08306v2","created_at":"2026-07-05T04:07:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.08306","created_at":"2026-07-05T04:07:27Z"},{"alias_kind":"pith_short_12","alias_value":"GHUBH3CBOU3L","created_at":"2026-07-05T04:07:27Z"},{"alias_kind":"pith_short_16","alias_value":"GHUBH3CBOU3L7C5B","created_at":"2026-07-05T04:07:27Z"},{"alias_kind":"pith_short_8","alias_value":"GHUBH3CB","created_at":"2026-07-05T04:07:27Z"}],"graph_snapshots":[{"event_id":"sha256:c3e1e425064bf6a2873396383e57b364110f50d1f15de39e0135983194af16e8","target":"graph","created_at":"2026-07-05T04:07:27Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2111.08306/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Using lattice QCD, we calculate the twist-2 contribution $a_2$ to the third Mellin moment of the spin structure functions $g_1$ and $g_2$ in the nucleon. In addition we evaluate the twist-3 contribution $d_2$. Our computations make use of $N_f=2+1$ gauge field ensembles generated by the Coordinated Lattice Simulations (CLS) effort. Neglecting quark-line disconnected contributions we obtain as our best estimates $a_2^{(p)}= 0.069(17)$, $d_2^{(p)}= 0.0105(68)$ and $a_2^{(n)}= 0.0068(88)$, $d_2^{(n)}= -0.0009(70)$ for the proton and the neutron, respectively, where we use the normalizations given","authors_text":"A. Sch\\\"afer, A. Sternbeck, G. Bali, M. G\\\"ockeler, M. L\\\"offler, S. B\\\"urger, S. Collins, T. Wurm","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2021-11-16T09:00:06Z","title":"Lattice results for the longitudinal spin structure and color forces on quarks in a nucleon"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.08306","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:d710228b6966f135b3e1b2a495b8f5714aff40db101ba6d2e16d5176cb460a4e","target":"record","created_at":"2026-07-05T04:07:27Z","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":"de304e7e61733ae0f95beb0f83712a7fb4dbb9b9c25f22bc2ea40cdc7e936e47","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2021-11-16T09:00:06Z","title_canon_sha256":"f5d7f226b5a20a3f847394de35faa2376cae704e3f02e5d62695cecf3e26c6b0"},"schema_version":"1.0","source":{"id":"2111.08306","kind":"arxiv","version":2}},"canonical_sha256":"31e813ec417536bf8ba18d83a70106649656dda710c82943514b68ca1b48156f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"31e813ec417536bf8ba18d83a70106649656dda710c82943514b68ca1b48156f","first_computed_at":"2026-07-05T04:07:27.859953Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:07:27.859953Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dfqrpc0DWLFNKBk7x9uqYs1vZrcXlxUsWSrfycLUXINXSzZ+OIiyzbjd6vTDgYn14u2/DZxYgMUKOi1tPAVhAA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:07:27.860438Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.08306","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d710228b6966f135b3e1b2a495b8f5714aff40db101ba6d2e16d5176cb460a4e","sha256:c3e1e425064bf6a2873396383e57b364110f50d1f15de39e0135983194af16e8"],"state_sha256":"d2e6910653a59b2621ebe81b34c275d49831b512d7f6f5fe87a2ccd756aebb62"}