Radiative pi0 photoproduction on protons in the Delta+(1232) region

Details Radiative pi0 photoproduction on protons in the Delta+(1232) region Radiative pi0 photoproduction on protons in the Delta+(1232) region

2010-01-20

arxiv.org/abs/1001.3626v2

Eur. Phys. J. A 43, 269-282 (2010)

Physics

High Energy Physics

High Energy Physics - Experiment

14 pages, 19 figures

Scientific paper

10.1140/epja/i2010-10925-y

The reaction gamma p -> p pi0 gamma' has been measured with the Crystal Ball / TAPS detectors using the energy-tagged photon beam at the electron accelerator facility MAMI-B. Energy and angular differential cross sections for the emitted photon gamma' and angular differential cross sections for the pi0 have been determined with high statistics in the energy range of the Delta+(1232) resonance. Cross sections and the ratio of the cross section to the non-radiative process gamma p -> p pi0 are compared to theoretical reaction models, having the anomalous magnetic moment kappa_Delta+ as free parameter. As the shape of the experimental distributions is not reproduced in detail by the model calculations, currently no extraction of kappa_Delta+ is feasible.

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