On the η and η′ photoproduction beam asymmetry at high energies
oleh: V. Mathieu, J. Nys, C. Fernández-Ramírez, A. Jackura, M. Mikhasenko, A. Pilloni, A.P. Szczepaniak, G. Fox
| Format: | Article |
|---|---|
| Diterbitkan: | Elsevier 2017-11-01 |
Deskripsi
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.