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arXiv · 0704.1776

Photoproduction of pi0-mesons off protons from the Delta(1232) region to E(gamma) = 3 GeV

H. van Pee·O. Bartholomy·V. Crede
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Abstract

Photoproduction of pi0 mesons was studied with the Crystal-Barrel detector at ELSA for incident energies from 300 MeV to 3 GeV. Differential cross sections d sigma /d Omega, d sigma/d t, and the total cross section are presented. For E(gamma) < 3 GeV, the angular distributions agree well with the SAID parametrization. At photon energies above 1.5 GeV, 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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H. van Pee, O. Bartholomy, V. Crede. 2007-04-13. Photoproduction of pi0-mesons off protons from the Delta(1232) region to E(gamma) = 3 GeV. https://doi.org/10.1140/epja%2Fi2006-10160-3

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