Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2006-04-05
Phys.Rev.Lett. 96 (2006) 242301; Erratum-ibid. 97 (2006) 029901
Physics
High Energy Physics
High Energy Physics - Experiment
4 Pages, 3 Figures, 1 Table, submitted to Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.96.242301
The pp->pp phi reaction has been studied at the Cooler Synchrotron COSY-Juelich, using the internal beam and ANKE facility. Total cross sections have been determined at three excess energies epsilon near the production threshold. The differential cross section closest to threshold at epsilon=18.5 MeV exhibits a clear S-wave dominance as well as a noticeable effect due to the proton-proton final state interaction. Taken together with data for pp omega-production, a significant enhancement of the phi/omega ratio of a factor 8 is found compared to predictions based on the Okubo-Zweig-Iizuka rule.
Barsov S.
Borgs W.
Buescher Markus
Dimitrov Vasili I.
Dymov S.
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