{"paper":{"title":"A Search for Sigma^0_5, N^0_5 and Theta^++ Pentaquark States","license":"","headline":"","cross_cats":["nucl-ex"],"primary_cat":"hep-ex","authors_text":"A. Saha, A. Sarty, A. Shahinyan, B. Reitz, B. Wojtsekhowski, C. Munoz-Camacho, C. W. de Jager, D. J. Hamilton, D. J. Margaziotis, D. W. Higinbotham, E. Chudakov, E. Piasetzky, E. Schulte, F. Cusanno, F. Garibaldi, G. Cates, I. I. Strakovsky, I. Rachek, J. Annand, J. Arrington, J. Gomez, J. Lerose, J.-O. Hansen, J. P. Chen, J. Reinhold, J. Singh, K. Paschke, M. Epstein, M. Iodice, M. Jones, N. Liyanage, O. Gayou, P. E. Reimer, P. Markowitz, P. Monaghan, R. Gilman, R. J. Feuerbach, R. Lindgren, R. Michaels, R. Roche, R. Sheyor, R. Subedi, R. Suleiman, Seonho Choi, T. Holmstrom, V. Mamyan, V. Nelyubin, V. Sulkovsky, W. Bertozzi, X. Jiang, X. Zheng, Ya. I. Azimov, Y. Qiang, Z.-E. Meziani","submitted_at":"2006-09-15T03:58:20Z","abstract_excerpt":"A high-resolution (sigma_instr. = 1.5 MeV) search for narrow states (Gamma < 10 MeV) with masses of M_x approx 1500-1850 MeV in ep -> e'K^+ X, e'K^- X and e' pi^+ X electroproduction at small angles and low Q^2 was performed. These states would be candidate partner states of the reported Theta^+(1540) pentaquark. No statistically significant signal was observed in any of the channels at 90% C.L. Upper limits on forward production were determined to be between 0.7% and 4.2% of the Lambda(1520) production cross section, depending on the channel and the assumed mass and width of the state."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0609025","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/hep-ex/0609025/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"}