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.

On the η and η ′ photoproduction beam asymmetry at high energies / Mathieu, V.; Nys, J.; Fernández ramírez, C.; Jackura, A.; Mikhasenko, M.; Pilloni, Alessandro; Szczepaniak, A. P.; Fox, G.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 774:(2017), pp. 362-367. [10.1016/j.physletb.2017.09.081]

On the η and η ′ photoproduction beam asymmetry at high energies

PILLONI, ALESSANDRO;
2017

Abstract

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.
2017
01 Pubblicazione su rivista::01a Articolo in rivista
On the η and η ′ photoproduction beam asymmetry at high energies / Mathieu, V.; Nys, J.; Fernández ramírez, C.; Jackura, A.; Mikhasenko, M.; Pilloni, Alessandro; Szczepaniak, A. P.; Fox, G.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 774:(2017), pp. 362-367. [10.1016/j.physletb.2017.09.081]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1011841
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