{"paper":{"title":"Experimental search for radiative decays of the pentaquark baryon \\Theta^+(1540)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A.E. Asratyan, A.G. Dolgolenko, C. Curceanu, C. Guaraldo, G.K. Tumanov, G.V. Davidenko, I.F. Larin, L.I. Sokolov, M.A. Kubantsev, N.N. Shishov, V.A. Matveev, V.A. Shebanov, V.S. Borisov, V.S. Verebryusov, V.V. Barmin","submitted_at":"2009-09-25T11:16:07Z","abstract_excerpt":"The data on the reactions K^+Xe --> K^0 \\gamma X and K^+Xe --> K^+ \\gamma X, obtained with the bubble chamber DIANA, have been analyzed for possible radiative decays of the \\Theta^+(1540) baryon: \\Theta^+ --> K^0 p \\gamma and \\Theta^+ --> K^+ n \\gamma. No signals have been observed, and we derive the upper limits \\Gamma(\\Theta^+ --> K^0 p \\gamma) / \\Gamma(\\Theta^+ --> K^0 p) < 0.032 and \\Gamma(\\Theta^+ --> K^+ n \\gamma) / \\Gamma(\\Theta^+ --> K^+ n) < 0.041 which, using our previous measurement of \\Gamma(\\Theta^+ --> KN) = (0.39+-0.10) MeV, translate to \\Gamma(\\Theta^+ --> K^0 p \\gamma) < 8 keV"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.4666","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"}