{"paper":{"title":"On the $\\eta$ and $\\eta'$ Photoproduction Beam Asymmetry at High Energies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A. Jackura, A. Pilloni, A. P. Szczepaniak, C. Fern\\'andez-Ram\\'irez, G. Fox, J. Nys, M. Mikhasenko, V. Mathieu","submitted_at":"2017-04-25T13:29:01Z","abstract_excerpt":"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."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.07684","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}