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Radiative pi(0) photoproduction on protons in the Delta(+)(1232) region

Schumann, S. and Boillat, B. and Downie, E. J. and Aguar-Bartolome, P. and Ahrens, J. and Annand, J. R. M. and Arends, H. J. and Beck, R. and Bekrenev, V. and Braghieri, A. and Branford, D. and Briscoe, W. J. and Brudvik, J. W. and Cherepnya, S. and Codling, R. and Drexler, P. and Fil`kov, L. V. and Glazier, D. I. and Gregor, R. and Heid, E. and Hornidge, D. and Jahn, O. and Kashevarov, V. L. and Kondratiev, R. and Korolija, M. and Kotulla, M. and Krambrich, D. and Krusche, B. and Lang, M. and Lisin, V. and Livingston, K. and Lugert, S. and MacGregor, I. J. D. and Manley, D. M. and Martinez-Fabregate, M. and McGeorge, J. C. and Mekterovic, D. and Metag, V. and Nefkens, B. M. K. and Nikolaev, A. and Novotny, R. and Ostrick, M. and Owens, R. O. and Pedroni, P. and Polonski, A. and Prakhov, S. N. and Price, J. W. and Rosner, G. and Rost, M. and Rostomyan, T. and Sober, D. and Starostin, A. and Supek, I. and Tarbert, C. M. and Thomas, A. and Unverzagt, M. and Walcher, Th. and Watts, D. P. and Zehr, F.. (2010) Radiative pi(0) photoproduction on protons in the Delta(+)(1232) region. The European physical journal. A, Hadrons and nuclei, Vol. 43, H. 3. pp. 269-282.

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Official URL: http://edoc.unibas.ch/dok/A5842051

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Abstract

The reaction gamma p -< p pi(0)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 pi(0) 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 nonradiative process gamma p -< p pi(0) 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.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Hadronenphysik (Krusche)
UniBasel Contributors:Krusche, Bernd
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Springer-Verlag
ISSN:1434-6001
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:14 Sep 2012 07:18
Deposited On:14 Sep 2012 06:47

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