A search for narrow resonances in the φφ system |
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| Authors: | PSL Booth MM Ballance LJ Carroll RA Donald DN Edwards D Frame BR French MA Houlden IS Hughes JN Jackson PA Kilcoyne JC Lassalle JET Lewis JG Lynch DMCL McFadzean WA Mitaroff JJ Myerscough JL Pinfold RM Turnbull |
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| Institution: | 1. University of Liverpool, Liverpool, England;2. University of Glasgow, Glasgow, Scotland, USA;3. CERN, Geneva, Switzerland |
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| Abstract: | Inclusive φφ production has been studied in π?Be interactions at 85 GeV/c incident momentum, and a signal of 4327 φφ events was found in a sample of data recorded with the aim of studying the low mass φφ system. We estimate that ～ 75% of this signal can be attributed to the correlated production of two φ′s. A search for narrow enhancements leads to upper limits at the 99.7% confidence level for σ(X) × BR(X → φφ) varying from ? 562 nb/Be nucleus at a mass of 2.1 GeV/c2 to ? 221 nb/Be nucleus at 3.1 GeV/c2, where X represents a possible narrow state. These upper limits represent an increase in sensitivity by a factor 3 to 5 when compared to currently available data. |
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