{"paper":{"title":"Cross section of the $pp\\to K^+\\Sigma^+n$ reaction close to threshold","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","nucl-ex","nucl-th"],"primary_cat":"hep-ex","authors_text":"A. Budzanowski, A. Chatterjee, A. Magiera, A. Sibirtsev, Da. Kirillov, Di. Kirillov, D. Kolev, D. Protic, E. Dorochkevitch, F. Hinterberger, G.J. Wagner, G. Martinska, H. Clement, H. Machner, I. Sitnik, J. Ritman, J. Urban, K. Kilian, K. Ulbrich, M. Kravcikova, M. Lesiak, N. Piskunov, P. Hawranek, P. von Rossen, R. Jahn, R. Joosten, R. Siudak, R. Tsenov, S. Kliczewski","submitted_at":"2010-07-09T09:34:50Z","abstract_excerpt":"We have measured inclusive data on $K^+$-meson production in $pp$ collisions at COSY J\\\"ulich close to the hyperon production threshold and determined the hyperon-nucleon invariant mass spectra. The spectra were decomposed into three parts: $\\Lambda p$, $\\Sigma^0p$ and $\\Sigma^+n$. The cross section for the $\\Sigma^+n$ channel was found to be much smaller than a previous measurement in that excess energy region. The data together with previous results at higher energies are compatible with a phase space dependence."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.1542","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":""},"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"}