Zeitschrift für Physik A Hadrons and Nuclei

, Volume 359, Issue 4, pp 435–444 | Cite as

Study of the OZI selection rule in hadronic processes

  • S. V. Golovkin
  • A. P. Kozhevnikov
  • V. P. Kubarovsky
  • A. I. Kulyavtsev
  • V. F. Kurshetsov
  • L. G. Landsberg
  • V. V. Molchanov
  • V. A. Mukhin
  • I. N. Nikitin
  • V. I. Solyanik
  • D. V. Vavilov
  • V. A. Victorov
  • M. Ya. Balatz
  • G. V. Dzubenko
  • G. S. Lomkatsi
  • V. T. Smolyankin
Article
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Abstract

In the experiments with LEPTON-F and SPHINX spectrometers the pion-induced charged exchange reactions π- + p → ϕ + n and π- + p → ω + n at Pπ-=32.5 GeV, as well as proton-induced diffractive reactions p + N → [pϕ] + N and p + N → [pω] + N at E p =70 GeV were studied. The comparison of the cross-sections for ϕ and ω-production in these reactions is used for testing the OZI selection rule in hadronic processes. It has been demonstrated that in pion reactions the ratio of the yields of ϕ and ω-mesons R(ϕ/ω) = (3 ± 1) · 10−3 is in a good agreement with naive quark model prediction based on the mixing in vector meson nonet and on the OZI rule (R(ϕ/ω)ozi = tg 2Δθ V − 4 · 10−3). At the same time in proton reactions the effective ratio of ϕ and ω yields is ∼ (4 ÷ 7) · 10-2, i.e. a strong violation of the OZI rule is observed in proton-nucleon interactions. This violation can be in favor of possible existence of some exotic ss̅ component in the quark structure of protons.

PACS

13.85.Fb 14.40.Cs 14.40.Ev 
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Copyright information

© Springer-Verlag 1997

Authors and Affiliations

  • S. V. Golovkin
    • 1
  • A. P. Kozhevnikov
    • 1
  • V. P. Kubarovsky
    • 1
  • A. I. Kulyavtsev
    • 1
  • V. F. Kurshetsov
    • 1
  • L. G. Landsberg
    • 1
  • V. V. Molchanov
    • 1
  • V. A. Mukhin
    • 1
  • I. N. Nikitin
    • 1
  • V. I. Solyanik
    • 1
  • D. V. Vavilov
    • 1
  • V. A. Victorov
    • 1
  • M. Ya. Balatz
    • 2
  • G. V. Dzubenko
    • 2
  • G. S. Lomkatsi
    • 2
  • V. T. Smolyankin
    • 2
  1. 1.Institute for High Energy PhysicsProtvino
  2. 2.Institute of Theoretical and Experimental PhysicsMoscow

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