Abstract
At the Bonn 2.5 GeV electron synchrotron we have measured the differential cross section of the reaction γp→π0 p at a pion CM angle of 170° and at photon energiesK γ between 0.6 and 1.8 GeV. In comparison to previous measurements the accuracy of the data was improved substantially. For the first time in neutral pion photoproduction a cusp structure at the η-threshold has been confirmed [1].
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Althoff, K.H., Gies, M., Kaul, O. et al. Photoproduction of neutral pions at backward angles in the resonance region and the η-cusp. Z. Phys. C - Particles and Fields 1, 327–336 (1979). https://doi.org/10.1007/BF01546970
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DOI: https://doi.org/10.1007/BF01546970