φ and ω meson production in pp reactions at plab=3.67 GeV/c

F. Balestra, Y. Bedfer, R. Bertini, L. C. Bland, A. Brenschede, F. Brochard, M. P. Bussa, Seonho Choi, M. Debowski, R. Dressler, M. Dzemidzic, J. Cl Faivre, I. V. Falomkin, L. Fava, L. Ferrero, J. Foryciarz, I. Fröhlich, V. Frolov, R. Garfagnini, A. GrassoE. Grosse, S. Heinz, V. V. Ivanov, W. W. Jacobs, W. Kühn, A. Maggiora, M. Maggiora, A. Manara, D. Panzieri, H. W. Pfaff, G. Piragino, G. B. Pontecorvo, A. Popov, J. Ritman, P. Salabura, V. Tchalyshev, F. Tosello, S. E. Vigdor, G. Zosi

Research output: Contribution to journalArticlepeer-review

115 Scopus citations

Abstract

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+1.2-0.9)× 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 p̄p 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.

Original languageEnglish (US)
Article number024004
Pages (from-to)240041-2400415
Number of pages2160375
JournalPhysical Review C - Nuclear Physics
Volume63
Issue number2
StatePublished - Feb 2001

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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