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The graal experiment: Beam polarization asymmetries in pseudoscalar meson photoproduction
The graal experiment: Beam polarization asymmetries in pseudoscalar meson photoproduction
Abstract
The GRAAL tagged and polarized γ beam has been operating with a maximum energy of 1100 MeV. For the first time asymmetry results in ν photoproduction were obtained and will be shown. Interesting results have also been obtained for π0 and π+ photo-production, that largely confirm the already existing ones, but also extend in not yet explored angular and energetic regions, especially for backward scattering and energies greater than 900 MeV.