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Polarization degrees of freedom in near-threshold photoproduction of omega -mesons in the pi^{0}_{} gamma decay channel |
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| Authors: | A. V. Sarantsev A. V. Anisovich V. A. Nikonov H. Schmieden |
| Affiliation: | 1. Helmholtz-Institut für Strahlen- und Kernphysik, Universit?t Bonn, Bonn, Germany 2. Petersburg Nuclear Physics Institute, Gatchina, Russia 3. Physikalisches Institut, Universit?t Bonn, Bonn, Germany |
| Abstract: | We study polarization variables in the photoproduction of $ omega$ -mesons with subsequent $ omega$ → $ gamma$ $ pi^{0}_{}$ decay. Single and double polarization observables are calculated as a function of different final-state angles. Reaction models include pomeron (natural parity) and $ pi^{0}_{}$ (unnatural parity) exchange in the t -channel. In addition, the contribution of s -channel resonances is considered. The sensitivity of the polarization observables to the reaction dynamics is discussed. |
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