{"paper":{"title":"Measurement of the proton spin structure at long distances","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"nucl-ex","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","submitted_at":"2021-02-04T14:53:27Z","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"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.02658","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2102.02658/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}