The OZI rule does not apply to baryons

John Ellis*, Erwin Gabathuler, Marek Karliner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Determinations of the π-N σ-term and the EMC measurement of deep inelastic polarized μp scattering and various theoretical arguments indicate that baryons contain a significant number of strange quark-antiquark pairs. Their presence gives rise to additional connected diagrams which evade the Okubo-Zweig-Iizuka (OZI) rule for meson-baryon couplings, and explain the apparent violation of the OZI rule in the reaction pp→φπ+π- as well as the process pp→ppφ+pions, and the backward peak seen in pp→K+K-. we catalogue predictions, based on moments of deep inelastic structure functions, for the OZI-evading couplings to baryons of 0-+, 0++, and 2++ and other mesons. Processes where these predictions can be tested include backward meson production in π-N scattering as well as pp annihilation and pp scattering.

Original languageEnglish
Pages (from-to)173-180
Number of pages8
JournalPhysics Letters B
Issue number1-2
StatePublished - 19 Jan 1989
Externally publishedYes


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