Okubo-Zweig-Iizuka rule violation in photoproduction

Abstract

We investigate OZI rule violation in omega and phi-meson photoproduction off nucleons. Data on the total cross sections indicate a large phi/omega ratio of about 0.8 at the maximal available photon energy that is in good agreement with expectations from QCD. On the other hand, data at large four momentum transfer exhibit a ratio of about 0.07, showing that the perturbative QCD regime is not approached at |t| > 2 GeV^2 and photon energies E_γ< 4 GeV. The anomanously large phi/omega ratio at low energies, that is close to the reaction threshold, remains to be explained within nonperturbative QCD.

5 pages, 4 PS figures, small modifications, version to appear in Phys. Rev. D (note: title changed in journal)

References in corpus (7)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Photoproduction of charm near threshold
• Updated dispersion-theoretical analysis of the nucleon electromagnetic form factors
• Photoproduction of the $\omega$ meson on the proton at large momentum transfer
• Systematic Regge theory analysis of omega photoproduction
• Evidence for the flavor singlet axial anomaly related effects in $\varphi$ meson electromagnetic production at large momentum transfers
• Gluonic effects in vector meson photoproduction at large momentum transfers

Cited by in corpus (10)

• Multi-quark interactions with a globally stable vacuum
• Phi-meson photoproduction from nuclei
• Aspects of phi-meson production in proton-proton collisions
• Evidence of N*(1535) resonance contribution in the pn->dϕreaction
• Comments on differential cross section of phi-meson photoproduction at threshold
• KKbar photoproduction from protons
• A-dependence of phi-meson production in p+A collisions
• Unified approach to photo and electro-production of mesons with arbitrary spins
• Irreducible tensor approach to spin observables in photo production of mesons with arbitrary spin-parity $s^{\pi }$
• Absorption of $\psi (2S)$ mesons in nuclei