Abstract.
Photoproduction of π0-mesons was studied with the Crystal-Barrel detector at ELSA for incident energies from 300MeV to 3GeV. Differential cross-sections dσ/dΩ, dσ/dt, and the total cross-section are presented. For E γ < 3GeV, the angular distributions agree well with the SAID parametrization. At photon energies above 1.5GeV, a strong forward peaking indicates t-channel exchange to be the dominant process. The rapid variations of the cross-section with energy and angle indicate production of resonances. An interpretation of the data within the Bonn-Gatchina partial-wave analysis is briefly discussed.
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The CB-ELSA Collaboration., van Pee, H., Bartholomy, O. et al. Photoproduction of πmesons off protons from the Δ(1232) region to Eγ = 3 GeV. Eur. Phys. J. A 31, 61–77 (2007). https://doi.org/10.1140/epja/i2006-10160-3
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DOI: https://doi.org/10.1140/epja/i2006-10160-3