One-loop corrections to omega photoproduction near threshold

Abstract

One-loop corrections to $\omega$ photoproduction near threshold have been investigated by using the approximation that all relevant transition amplitudes are calculated from the tree diagrams of effective Lagrangians. With the parameters constrained by the data of $\gamma N\to \pi N$, $\gamma N\to \rho N$, and $\pi N\to \omega N$ reactions, it is found that the one-loop effects due to the intermediate $\pi N$ and $\rho N$ states can significantly change the differential cross sections and spin observables. The results from this exploratory investigation suggest strongly that the coupled-channel effects should be taken into account in extracting reliable resonance parameters from the data of vector meson photoproduction in the resonance region.

19 pages, REVTeX, 14 figures, title changed, revised version to appear in Phys. Rev. C

References in corpus (8)

• DRAFT: Photoproduction of the ${\rho }^0$ meson on the proton at large momentum transfer
• Coupled-channel study of gamma p --> K+ Lambda
• Flavor-Spin Symmetry Estimate of the Nucleon Tensor Charge
• Production of $\omega$ and $\varphi$ Mesons in Near-Threshold $\pi N$ Reactions: Baryon Resonances and Validity of the OZI Rule
• Exclusive electroproduction of phi mesons at 4.2 GeV
• Pi N -> Omega N in a Coupled-Channel Approach
• Study of Nucleon Resonances with Double Polarization Observables of Pion Photoproduction
• The pionic width of the $\omega (782)$ meson within a well-defined, unitary quantum field theory of (anti-)particles and (anti-)holes

Cited by in corpus (24)

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• Nucleon Resonances with Hidden Charm in $\gamma p$ reactions
• Spin effects and baryon resonance dynamics in phi-meson photoproduction at few GeV
• Rho meson photoproduction at low energies
• Scalar kappa meson in K* photoproduction
• Pentaquark Theta^+(1540) production in gamma N --> K Anti-K N
• New study of the isotensor pi-pi interaction
• Photo-production of Bound States with Hidden Charms
• Study of nucleon resonances with electromagnetic interactions
• Nucleon resonances in $\gamma p\to \omega p$ reaction
• Models of $J/\Psi$ photo-production reactions on the nucleon
• Subthreshold rho contribution in J/psi decay to omega pion pion and Kaon anti-Kaon pion
• Spin asymmetries in gamma + N --> K*bar + Theta^+
• Photon beam asymmetry $\Sigma$ in the reaction $\vec{\gamma }p\to p\omega$ for $E_{\gamma }$ = 1.152 to 1.876 GeV
• Vector meson photoproduction studied in its radiative decay channel
• Channel coupling effects in $\rho$-meson photoproduction
• Higher meson resonances in $\rho \to {\pi }^0{\pi }^0\gamma$ and $\omega \to {\pi }^0{\pi }^0\gamma$
• Revealing the inner structure of the newly observed ${\eta }_1(1855)$ via photoproduction
• Analysis of the $b_1$ meson decay in local tensor bilinear representation
• Subthreshold production of $J/\psi$ mesons from the deuteron with SoLID
• pi and rho loop corrections to omega photoproduction in the resonance region
• Irreducible tensor approach to spin observables in photo production of mesons with arbitrary spin-parity $s^{\pi }$
• Dynamical model of $\varphi$ meson photoproduction on the nucleon and ${}^{4}He$