Photoproduction of meson pairs: First measurement of the polarization observable Is
Abstract
The polarization observable Is, a feature exclusive to the acoplanar kinematics of multi-meson final states produced via linearly polarized photons, has been measured for the first time. Results for the reaction g p -> p pi0 eta are presented for incoming photon energies between 970 MeV and 1650 MeV along with the beam asymmetry Ic. The comparably large asymmetries demonstrate a high sensitivity of Is to the dynamics of the reaction. Fits using Bonn-Gatchina partial wave analysis demonstrate that the new polarization observables carry significant information on the contributing partial waves.
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