Asymmetries in phi photoproduction and the OZI violation

Abstract

We study the vector meson density matrix and the associated polarization asymmetries in $\varphi$ photoproduction near threshold. In order to study the OZI violating processes, we consider the direct $\varphi NN$ coupling as well as the knockout processes arising from the non-vanishing $s\bar{s}$ sea quarks in the nucleon. The polarization asymmetries in $\varphi$ meson decays are found to be very useful to constrain the $\varphi NN$ coupling constant. The hidden strangeness of the nucleon can also be studied by these asymmetries, but mostly at large $|t|$ region.

12 pages, REVTeX, 5 figures, typo errors corrected, version to appear in Phys. Rev. C

References in corpus (2)

• Non-diffractive mechanisms in the $\varphi$ meson photoproduction on nucleons
• Exclusive electroproduction of phi mesons at 4.2 GeV

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• Searching for the odderon in $pp\to pp{K}^{+}{K}^{-}$ and $pp\to pp{\mu }^{+}{\mu }^{-}$ reactions in the $\varphi (1020)$ resonance region at the LHC
• Extraction of Proton Trace Anomaly Energy from Near-Threshold $\varphi$ and $J/\psi$ photo-productions
• Proton and deuteron mass radii from near-threshold $\varphi$-meson photoproduction
• Vector meson photoproduction studied in its radiative decay channel
• On the near-threshold incoherent $\varphi$ photoproduction on the deuteron: any trace of a resonance?