{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:SFQKMMMY7GNS3CVIBTBDVKS74X","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":"dad60679cb366a59ada170395c8982c93730a151b3d26f254a8ceabdae91ec1c","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2021-02-04T14:53:27Z","title_canon_sha256":"83fbbf079c7fe2e19ebe0db7c7e01f96ba0c8cf6a0e4e6cdfe4bcf1d5d3b7436"},"schema_version":"1.0","source":{"id":"2102.02658","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.02658","created_at":"2026-07-05T03:47:51Z"},{"alias_kind":"arxiv_version","alias_value":"2102.02658v2","created_at":"2026-07-05T03:47:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.02658","created_at":"2026-07-05T03:47:51Z"},{"alias_kind":"pith_short_12","alias_value":"SFQKMMMY7GNS","created_at":"2026-07-05T03:47:51Z"},{"alias_kind":"pith_short_16","alias_value":"SFQKMMMY7GNS3CVI","created_at":"2026-07-05T03:47:51Z"},{"alias_kind":"pith_short_8","alias_value":"SFQKMMMY","created_at":"2026-07-05T03:47:51Z"}],"graph_snapshots":[{"event_id":"sha256:6379ca459c0afb015b27d97dff25b82b9f9f233d3f4427f272261deafd9606cc","target":"graph","created_at":"2026-07-05T03:47:51Z","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/2102.02658/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Measuring the spin structure of protons and neutrons tests our understanding of how they arise from quarks and gluons, the fundamental building blocks of nuclear matter. At long distances the coupling constant of the strong interaction becomes large, requiring non-perturbative methods to calculate quantum chromodynamics processes, such as lattice gauge theory or effective field theories. Here we report proton spin structure measurements from scattering a polarized electron beam off polarized protons. The spin-dependent cross-sections were measured at large distances, corresponding to the regio","authors_text":"A. Bianconi, A. Celentano, A. D'Angelo, A. Deur, A. El Alaoui, A. Filippi, A. Hobart, A.I. Ostrovidov, A. Khanal, A. Kripko, A. Rizzo, A.S. Biselli, A. Schmidt, B.A. Raue, B. McKinnon, B. Yale, C. Carlin, C. Djalali, C.D. Keith, C. Mullen, C. Salgado, C.W. Kim, D. Bulumulla, D.G. Ireland, D.G. Meekins, D. Heddle, D.I. Glazier, D. Keller, D.P. Watts, D.S. Carman, E.L. Isupov, E. Long, E. Pasyuk, E. Voutier, F. Benmokhtar, F. Bossu, F.J. Klein, F. Sabatie, F.-X. Girod, G. Ciullo, G. Fedotov, G.P. Gilfoyle, G. Rosner, H. Atac, H. Avakian, H. Hakobyan, H. Kang, H.S. Jo, H. Voskanyan, I. Bedlinskiy, I.I. Strakovsky, I.J.D. MacGregor, J. Brock, J.C. Carvajal, J.-P. Chen, J. Poudel, J. Ritman, J. Rowley, J. Zhang, K.A. Griffioen, K. Hafidi, K. Hicks, K. Joo, K.L. Giovanetti, K. Livingston, K. Neupane, K.P. Adhikari, K. Park, K. Slifer, L. Barion, L.B. Weinstein, L. Clark, L. Elouadrhiri, L. Guo, L. Lanza, L. Marsicano, L. Pappalardo, L. Venturelli, M. Battaglieri, M. Bondi, M. Contalbrigo, M. Defurne, M. Ehrhart, M. Guidal, M. Hattawy, M. Holtrop, M.H. Wood, M.J. Amaryan, M. Khandaker, M. Leali, M.L.Seely, M. Mirazita, M. Osipenko, M. Paolone, M. Ripani, M. Ungaro, N. Dashyan, N. Guler, N. Markov, N. Sparveris, N. Tyler, N. Zachariou, O. Pogorelko, P. Bosted, P. Chatagnon, P. Eugenio, P.L. Cole, P. Lenisa, P. Nadel-Turonski, P. Rossi, R.A.Schumacher, R. De Vita, R. Dupre, R. Fersch, R.W. Gothe, S. Adhikari, S. Boiarinov, S. Choi, S. Diehl, S.E. Kuhn, S. Fegan, S. Joosten, S.K. Phillips, S. Niccolai, S.Sirca, S. Stepanyan, S. Strauch, T.A. Forest, T.B. Hayward, T. Chetry, T. Holmstrom, T. Mineeva, U.Shrestha, V.A. Drozdov, V. Crede, V.D. Burkert, V. Kubarovsky, V. Mascagna, V. Mokeev, V. Sulkosky, W.J. Briscoe, W.K. Brooks, W. Kim, W. Phelps, X. Wei, X. Zheng, Y. Ghandilyan, Y.G.Sharabian, Y. Ilieva, Y. Prok, Z.W. Zhao","cross_cats":["hep-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2021-02-04T14:53:27Z","title":"Measurement of the proton spin structure at long distances"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.02658","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":"sha256:23702799a863a05a96487b61f9806cc1e2f9e2e089ead2cb4be156f0b227e678","target":"record","created_at":"2026-07-05T03:47:51Z","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":"dad60679cb366a59ada170395c8982c93730a151b3d26f254a8ceabdae91ec1c","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2021-02-04T14:53:27Z","title_canon_sha256":"83fbbf079c7fe2e19ebe0db7c7e01f96ba0c8cf6a0e4e6cdfe4bcf1d5d3b7436"},"schema_version":"1.0","source":{"id":"2102.02658","kind":"arxiv","version":2}},"canonical_sha256":"9160a63198f99b2d8aa80cc23aaa5fe5ed56e844720298bb2eaa4f2cb81a2bfc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9160a63198f99b2d8aa80cc23aaa5fe5ed56e844720298bb2eaa4f2cb81a2bfc","first_computed_at":"2026-07-05T03:47:51.313489Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:47:51.313489Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U2RE5nQuA586MJMCqxf9SvtLqtUNoo9iVL6Nl5AYJmOrJXDOVAGfAYNm1tt1dYEpDf0J51B9XWB/3q0vpJ/cDg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:47:51.313926Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.02658","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:23702799a863a05a96487b61f9806cc1e2f9e2e089ead2cb4be156f0b227e678","sha256:6379ca459c0afb015b27d97dff25b82b9f9f233d3f4427f272261deafd9606cc"],"state_sha256":"71cacd622e7a530241a269aa4069efaa2875818d4cccd1098c13ef69508edebe"}