Radiative π0 photoproduction on protons in the Δ+ (1232) region

Schumann, S. et al. (2010) Radiative π0 photoproduction on protons in the Δ+ (1232) region. European Physical Journal A, 43(3), pp. 269-282. (doi: 10.1140/epja/i2010-10925-y)

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The reaction γp → pπ<sup> </sup>0γ<sup>′</sup> 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 γ<sup>′</sup> and angular differential cross-sections for the π<sup>0</sup> have been determined with high statistics in the energy range of the Δ<sup>+</sup> (1232)-resonance. Cross-sections and the ratio of the cross-section to the nonradiative process γp → pπ <sup>0</sup> are compared to theoretical reaction models, having the anomalous magnetic moment <i>κ<sub> Δ</sub></i> as free parameter. As the shape of the experimental distributions is not reproduced in detail by the model calculations, currently no extraction of <i>κ<sub> Δ</sub></i> is feasible.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Glazier, Dr Derek and MacGregor, Professor Douglas and Livingston, Dr Kenneth and Annand, Dr John and Rosner, Professor Guenther
Authors: Schumann, S., Boillat, B., Downie, E.J., Aguar-Bartolome, P., Ahrens, J., Annand, J.R.M., Arends, H.J., Beck, R., Bekrenev, V., Braghieri, A., Branford, D., Briscoe, W.J., Brudvik, J.W., Cherepnya, S., Codling, R., Drexler, P., Fil'kov, L.V., Glazier, D.I., Gregor, R., Heid, E., Hornidge, D., Jahn, O., Kashevarov, V.L., Kondratiev, R., Korolija, M., Kotulla, M., Krambrich, D., Krusche, B., Lang, M., Lisin, V., Livingston, K., Lugert, S., MacGregor, I.J.D., Manley, D.M., Martinez-Fabregate, M., McGeorge, J.C., Mekterovic, D., Metag, V., Nefkens, B.M.K., Nikolaev, A., Novotny, R., Ostrick, M., Owens, R.O., Pedroni, P., Polonski, A., Prakhov, S.N., Price, J.W., Rosner, G., Rost, M., Rostomyan, T., Sober, D., Starostin, A., Supek, I., Tarbert, C.M., Thomas, A., Unverzagt, M., Walcher, T., Watts, D.P., and Zehr, F.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:European Physical Journal A
ISSN (Online):1434-601X
Published Online:17 February 2010

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