{"paper":{"title":"$A_N$ at small negative values of $\\xf$ in the reaction $p+p(pol) \\to \\pi^0+X$ at 70 GeV and universal threshold in inclusive pion production","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A.A. Derevschikov, A.A. Lukhanin, A.B. Neganov, A.E. Yakutin, A.F. Prudkoglyad, A.M. Davidenko, A.N. Fedorov, A.N. Vasiliev, A.P. Meschanin, K.E. Shestermanov, L.F. Soloviev, L.V. Nogach, N.S. Borisov, P.A. Semenov, S.B. Nurushev, V.N. Grishin, V.N. Matafonov, V.V. Mochalov, V.Yu. Khodyrev, Yu.A. Matulenko, Yu.A. Plis, Yu.A. Usov, Yu.M. Melnick","submitted_at":"2005-01-24T08:42:24Z","abstract_excerpt":"The talk continues the series of Single Spin Asymmetry (SSA) $\\pi^0$ inclusive measurements carried out at Protvino 70 GeV accelerator. The asymmetry in the polarized target fragmentation region grows up in absolute value with $\\xf$ decreasing and equals to $(-16 \\pm 5)%$ at $-0.4<\\xf<-0.25$. The result of the current experiment is in agreement with the universal threshold in pion asymmetries."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0501062","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":""},"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"}