On the $\eta$ and ${\eta }^{\prime }$ Photoproduction Beam Asymmetry at High Energies

Abstract

We show that, in the Regge limit, beam asymmetries in $\eta$ and ${\eta }^{\prime }$ photoproduction are sensitive to hidden strangeness components. Under reasonable assumptions about the couplings we estimate the contribution of the $\varphi$ Regge pole, which is expected to be the dominant hidden strangeness contribution. The ratio of the asymmetries in ${\eta }^{\prime }$ and $\eta$ production is estimated to be close to unity in the forward region $0<-t/{\text{GeV}}^2\le 1$ at the photon energy $E_{\text{lab}}=9$~GeV, relevant for the upcoming measurements at Jefferson Lab.

arXiv comment9 pages, 4 figures

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Cited by in corpus (8)

• Novel approaches in Hadron Spectroscopy
• Beam Asymmetry $\mathbf{\Sigma }$ for the Photoproduction of $\eta$ and ${\eta }^{\prime }$ Mesons at ${\mathbf{E}}_{\gamma }=8.8$GeV
• Features of $\pi \Delta$ Photoproduction at High Energies
• Global analysis of charge exchange meson production at high energies
• Structure of Pion Photoproduction Amplitudes
• Analysis of the differential cross section and photon beam asymmetry data for $\gamma p\to {\eta }^{\prime }p$
• Beam Asymmetries ($\Sigma$) for ${\pi }^0$, $\eta$ and ${\eta }^{\prime }$ in Photoproduction at GlueX
• High-energy ${\eta }^{(\prime )}\pi$ photoproduction and the nature of exotic waves