Phys. Rev. Lett. 81, 4572–4575 (1998)Production of φ and ω Mesons in Near-Threshold pp ReactionsReceived 26 August 1998; published in the issue dated 23 November 1998 The ratio of the exclusive production cross sections for φ and ω mesons has been measured in pp reactions at Tbeam = 2.85 GeV. The observed φ/ω ratio is (3.7±0.7-0.9+1.2)×10-3. After phase space corrections, this ratio is about a factor of 10 enhanced relative to naive predictions based upon the Okubo-Zweig-Iizuka rule, in comparison to an enhancement by a factor of ∼3 previously observed at higher energies. The modest increase of this enhancement near the production threshold is compared to the much larger increase of the φ/ω ratio observed in specific channels of p̅ p annihilation experiments. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.81.4572
DOI:
10.1103/PhysRevLett.81.4572
PACS:
25.40.Ve, 13.75.Cs, 13.85.Hd, 14.40.Cs
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