On the η and η′ Photoproduction Beam Asymmetry at High Energies

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https://doi.org/10.1016/j.physletb.2017.09.081
https://doi.org/10.1016/j.physletb.2017.09.081

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2017-11-10

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https://hdl.handle.net/2022/31976

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We show that, in the Regge limit, beam asymmetries in η and η′ photoproduction are sensitive to hidden strangeness components. Under reasonable assumptions about the couplings we estimate the contribution of the ϕ Regge pole, which is expected to be the dominant hidden strangeness contribution. The ratio of the asymmetries in η′ and η production is estimated to be close to unity in the forward region 0 < −t / GeV2 ≤ 1 at the photon energy Elab = 9 GeV , relevant for the upcoming measurements at Jefferson Lab.

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Mathieu, V. "On the η and η′ Photoproduction Beam Asymmetry at High Energies." Physics Letters B, vol. B774, pp. 362-367, 2017-11-10, https://doi.org/10.1016/j.physletb.2017.09.081.

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Physics Letters B

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Faculty Open Access Articles