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arXiv · 1704.07684

On the $\eta$ and $\eta'$ Photoproduction Beam Asymmetry at High Energies

V. Mathieu·J. Nys·C. Fernández-Ramírez·A. Jackura·M. Mikhasenko·A. Pilloni·A. P. Szczepaniak·G. Fox
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Abstract

We show that, in the Regge limit, beam asymmetries in $\eta$ and $\eta'$ photoproduction are sensitive to hidden strangeness components. Under reasonable assumptions about the couplings we estimate the contribution of the $\phi$ Regge pole, which is expected to be the dominant hidden strangeness contribution. The ratio of the asymmetries in $\eta'$ and $\eta$ production is estimated to be close to unity in the forward region $0 < -t/\text{GeV}^2 \leq 1$ at the photon energy $E_\text{lab} = 9$~GeV, relevant for the upcoming measurements at Jefferson Lab.

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V. Mathieu, J. Nys, C. Fernández-Ramírez, A. Jackura, M. Mikhasenko, A. Pilloni, A. P. Szczepaniak, G. Fox. 2017-04-25. On the $\eta$ and $\eta'$ Photoproduction Beam Asymmetry at High Energies. https://doi.org/10.1016/j.physletb.2017.09.081

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