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arXiv · 0807.0594

Beam asymmetry in near threshold omega photoproduction off the proton

Frank Klein et al.
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Abstract

The photoproduction of omega mesons off protons has been studied at the Bonn ELSA accelerator from threshold to E_gamma = 1700 MeV. Linearly polarized beams were produced via coherent bremsstrahlung. Large photon asymmtries in excess of 50% were obtained, whereas the pion asymmetries from omega \to pi^0 gamma are close to zero. The asymmetries do characteristically depend on Theta_{cm} rather than |t| and indicate s-channel resonance formation on top of t-channel exchange processes.

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Frank Klein et al.. 2008-07-03. Beam asymmetry in near threshold omega photoproduction off the proton. https://doi.org/10.1103/physrevd.78.117101

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