Abstract
We investigate OZI rule violation in $\ensuremath{\omega}$ and $\ensuremath{\phi}$-meson photoproduction off nucleons. Data on the total cross sections indicate a large $\ensuremath{\phi}/\ensuremath{\omega}$ 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 $|t|>2\text{ }\text{ }{\mathrm{GeV}}^{2}$ and photon energies ${E}_{\ensuremath{\gamma}}<4\text{ }\text{ }\mathrm{GeV}$. The anomanously large $\ensuremath{\phi}/\ensuremath{\omega}$ ratio at low energies, that is close to the reaction threshold, remains to be explained within nonperturbative QCD.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
