{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/25680"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/25680","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Search for the eta c","abstract":"In an experiment performed at the Alternating Gradient Synchroton at Brookhaven National Laboratory, we searched for narrow resonances in the reaction pi minus p -> X n, X -> gamma gamma at 13 Gev. We used a double arm spectrometer with lead glass and scintillation elements. No resonances were observed above mass 2.8 in the gamma gamma spectrum. The upper limit for the eta c cross section tines branching ratio is 23 pb.","abstract_html":"In an experiment performed at the Alternating Gradient Synchroton at Brookhaven National Laboratory, we searched for narrow resonances in the reaction pi minus p -> X n, X -> gamma gamma at 13 Gev. We used a double arm spectrometer with lead glass and scintillation elements. No resonances were observed above mass 2.8 in the gamma gamma spectrum. 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We used a double arm spectrometer with lead glass and scintillation elements. No resonances were observed above mass 2.8 in the gamma gamma spectrum. The upper limit for the eta c cross section tines branching ratio is 23 pb.","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-06T19:41:25Z No. of bitstreams: 1 1982_garren.pdf: 5470297 bytes, checksum: 707975e86950766d8514cdc44453d596 (MD5)","Made available in DSpace on 2011-07-06T19:41:25Z (GMT). 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No resonances were observed above mass 2.8 in the gamma gamma spectrum. The upper limit for the eta c cross section tines branching ratio is 23 pb.","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-06T19:41:25Z No. of bitstreams: 1 1982_garren.pdf: 5470297 bytes, checksum: 707975e86950766d8514cdc44453d596 (MD5)","Made available in DSpace on 2011-07-06T19:41:25Z (GMT). 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