Radiative pi0 photoproduction on protons in the Delta 1232 region - High Energy Physics - ExperimentReportar como inadecuado




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Abstract: The reaction gamma p -> p pi0 gamma- has been measured with the Crystal Ball- TAPS detectors using the energy-tagged photon beam at the electronaccelerator facility MAMI-B. Energy and angular differential cross sections forthe emitted photon gamma- and angular differential cross sections for the pi0have been determined with high statistics in the energy range of theDelta+1232 resonance. Cross sections and the ratio of the cross section tothe non-radiative process gamma p -> p pi0 are compared to theoretical reactionmodels, having the anomalous magnetic moment kappa Delta+ as free parameter. Asthe shape of the experimental distributions is not reproduced in detail by themodel calculations, currently no extraction of kappa Delta+ is feasible.



Autor: S. Schumann, B. Boillat, E.J. Downie, P. Aguar-Bartolomé, J. Ahrens, J.R.M. Annand, H.J. Arends, R. Beck, V. Bekrenev, A. Braghi

Fuente: https://arxiv.org/







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