{"paper":{"title":"Evidence for Strange Quark Contributions to the Nucleon's Form Factors at $Q^2$ = 0.108 (GeV/c)$^2$","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Lorente, B. Gl\\\"aser, B. Plaster, C. Weinrich, D. Schwaab, D. von Harrach, E.-M. Kabu\\ss, E. Schilling, F. E. Maas, G. Stephan, G. Weber, I. Altarev, J. Arvieux, J. Diefenbach, J. H. Lee, J. van de Wiele, K. Aulenbacher, L. Capozza, M. El-Yakoubi, M. Morlet, M. Sikora, R. Frascaria, R. Kothe, R. Kunne, R. Suleiman, S. Baunack, S. Kowalski, S. Ong, S. Taylor, T. Hammel, Y. Imai","submitted_at":"2004-12-14T13:35:03Z","abstract_excerpt":"We report on a measurement of the parity violating asymmetry in the elastic scattering of polarized electrons off unpolarized protons with the A4 apparatus at MAMI in Mainz at a four momentum transfer value of $Q^2$ = \\Qsquare (GeV/c)$^2$ and at a forward electron scattering angle of 30$^\\circ < \\theta_e < 40^\\circ$. The measured asymmetry is $A_{LR}(\\vec{e}p)$ = (\\Aphys $\\pm$ \\Deltastat$_{stat}$ $\\pm$ \\Deltasyst$_{syst}$) $\\times$ 10$^{-6}$. The expectation from the Standard Model assuming no strangeness contribution to the vector current is A$_0$ = (\\Azero $\\pm$ \\DeltaAzero) $\\times$ 10$^{-6"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-ex/0412030","kind":"arxiv","version":1},"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/nucl-ex/0412030/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"}