{"paper":{"title":"Observation of a resonance in the K$_s$p decay channel at a mass of 1765 MeV/c$^2$","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Fournier, A. Simon, A. Trombini, B. Povh, B. Volkemer, C. B\\'erat, C. Busch, C. B\\\"uscher, C. Newsom, C. Scheel, D. Barberis, D. Newbold, E.A. Chudakov, E. Hubbard, E. Vesin, E. Wittmann, F. Charignon, F. Dropmann, F. Faller, G. Rosner, G. W\\\"alder, H. Neeb, H. Rudolph, H.-W. Siebert, I. Konorov, I. Potashnikova, J. Chauvin, J. Engelfried, J. Pochodzalla, K. K\\\"onigsmann, K. Martens, K. Vorwalter, L. Rossi, L. Schmitt, M. Beck, M. Boss, M. Bu\\'enerd, M. Godbersen, M. Heidrich, M.I. Adamovich, M. Rey-Campagnolle, M.V. Zavertyaev, N. Keller, O. Thilmann, P. Grafstr\\\"om, Ph. Martin, R.B. Hurst, R. Michaels, R. Werding, S. Brons, S.G. Gerassimov, S. Masciocchi, S. Paul, Th. Haller, Th. Walcher, U. Dersch, U. M\\\"uller, V. Smith, WA89 Collaboration, W. Beusch, W. Br\\\"uckner, Yu.A. Alexandrov, Z. Ren","submitted_at":"2007-02-27T09:57:02Z","abstract_excerpt":"We report on the observation of a K$_s$p resonance signal at a mass of 1765$\\pm$5 MeV/c$^2$, with intrinsic width $\\Gamma = 108\\pm 22$ MeV/c$^2$, produced inclusively in $\\Sigma^-$-nucleus interactions at 340 GeV/c in the hyperon beam experiment WA89 at CERN. The signal was observed in the kinematic region $x_F>0.7$, in this region its production cross section rises approximately linearly with $(1-x_F)$, reaching $BR(X\\to K_S p)\\cdot d\\sigma /dx_F = (5.2\\pm 2.3) \\mu b $ per nucleon at $x_F=0.8$. The hard \\xf spectrum suggests the presence of a strong leading particle effect in the production a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0702044","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/hep-ex/0702044/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"}