[Formula Presented] and [Formula Presented] meson production in [Formula Presented] reactions at [Formula Presented]

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


The exclusive production cross sections for [Formula Presented] and [Formula Presented] mesons have been measured in proton-proton reactions at [Formula Presented] The observed [Formula Presented] cross section ratio is [Formula Presented] 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 [Formula Presented] 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 [Formula Presented] ratio observed in specific channels of [Formula Presented] annihilation experiments. Furthermore, differential cross section results are also presented which indicate that although the [Formula Presented] meson is predominantly produced from a [Formula Presented] proton-proton entrance channel, other partial waves contribute significantly to the production mechanism at this beam momentum.

Original languageEnglish (US)
Number of pages1
JournalPhysical Review C - Nuclear Physics
Issue number2
StatePublished - 2001
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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