Study of the reaction p̅ p⃗; φφ from 1.1 to 2.0 GeV/c

Harris, Philip and et al, (1998) Study of the reaction p̅ p⃗; φφ from 1.1 to 2.0 GeV/c. Physical Review D, 57 (9). pp. 5370-5381. ISSN 1550-7998

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A study has been performed of the reaction pbar p -> 4K using in-flight antiprotons from 1.1 to 2.0 GeV/c incident momentum interacting with a hydrogen jet target. The reaction is dominated by the production of a pair of phi mesons. The pbar p -> phi phi cross section rises sharply above threshold and then falls continuously as a function of increasing antiproton momentum. The overall magnitude of the cross section exceeds expectations from a simple application of the OZI rule by two orders of magnitude. In a fine scan around the xi/f_J(2230) resonance, no structure is observed. A limit is set for the double branching ratio B(xi -> pbar p) * B(xi -> phi phi) < 6e-5 for a spin 2 resonance of M = 2.235 GeV and Width = 15 MeV.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Philip Harris
Date Deposited: 06 Feb 2012 20:30
Last Modified: 03 Jul 2019 00:20

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