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Incoherent neutral pion photoproduction on C¹²

Tarbert, C. M. and Watts, D. P. and Aguar, P. and Ahrens, J. and Annand, J. R. M. and Arends, H. J. and Beck, R. and Bekrenev, V. and Boillat, B. and Braghieri, A. and Branford, D. and Briscoe, W. J. and Brudvik, J. and Cherepnya, S. and Codling, R. and Downie, E. J. and Foehl, K. and Glazier, D. I. and Grabmayr, P. and Gregor, R. and Heid, E. and Hornidge, D. and Jahn, O. and Kashevarov, V. L. and Knezevic, A. 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, M. and McGeorge, J. C. and Mekterovic, D. and Metag, V. and Nefkens, B. M. K. and Nikolaev, A. and Novotny, R. 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 Schadmand, S. and Schumann, S. and Sober, D. and Starostin, A. and Supek, I. and Thomas, A. and Unverzagt, M. and Walcher, Th. and Zehr, F.. (2008) Incoherent neutral pion photoproduction on C¹². Physical review letters, Vol. 100, H. 13 , 132301, 5 S..

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Official URL: http://edoc.unibas.ch/dok/A5261923

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Abstract

We present the first detailed measurement of incoherent photoproduction of neutral pions to a discrete state of a residual nucleus. The C-12(gamma,pi(0))C-12(4.4 MeV)* reaction has been studied with the Glasgow photon tagger at MAMI employing a new technique which uses the large solid angle Crystal Ball detector both as a pi(0) spectrometer and to detect decay photons from the excited residual nucleus. The technique has potential applications to a broad range of future nuclear measurements with the Crystal Ball and similar detector systems elsewhere. Such data are sensitive to the propagation of the Delta in the nuclear medium and will give the first information on matter transition form factors from measurements with an electromagnetic probe. The incoherent cross sections are compared to two theoretical predictions including a Delta-hole model.
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:American Physical Society
ISSN:0031-9007
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:26
Deposited On:22 Mar 2012 13:53

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