Phys. Rev. C 63, 024004 (2001) [15 pages]φ and ω meson production in pp reactions at plab=3.67 GeV/cReceived 13 July 2000; published 24 January 2001 The exclusive production cross sections for ω and φ mesons have been measured in proton-proton reactions at plab=3.67 GeV/c. The observed φ/ω cross section ratio is (3.8±0.2-0.9+1.2)×10-3. After phase space corrections, this ratio is enhanced by about an order of magnitude relative to naive predictions based upon the Okubo-Zweig-Iizuka (OZI) rule, in comparison to an enhancement by a factor ∼3 previously observed at higher beam momenta. 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. Furthermore, differential cross section results are also presented which indicate that although the φ meson is predominantly produced from a 3P1 proton-proton entrance channel, other partial waves contribute significantly to the production mechanism at this beam momentum. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.63.024004
DOI:
10.1103/PhysRevC.63.024004
PACS:
25.40.Ve, 13.75.Cs, 13.85.Hd, 14.40.Cs
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