Measurements of C-12((gamma)over-right-arrow, pp) photon asymmetries for E-gamma=200-450 MeV

Robinson, J. and MacGregor, I. J. D. and Annand, J. R. M. and Aguar-Bartolome, P. and Akasoy, L. K. and Arends, H. J. and Azimov, Ya. I. and Bantawa, K. and Beck, R. and Bekrenev, V. S. and Berghaeuser, H. and Braghieri, A. and Branford, D. and Briscoe, W. J. and Brudvik, J. and Cherepnya, S. and Codling, R. F. B. and Demissie, B. T. and Dieterle, M. and Downie, E. J. and Drexler, P. and Fil`kov, L. V. and Glazier, D. I. and Gregor, R. and Hamilton, D. and Heid, E. and Hornidge, D. and Howdle, D. and Jahn, O. and Jude, T. C. and Kashevarov, V. L. and Keshelashvili, I. and Kondratiev, R. and Korolija, M. and Kotulla, M. and Koulbardis, A. A. and Kruglov, S. P. and Krusche, B. and Lisin, V. and Livingston, K. and Manley, D. M. and McGeorge, J. C. and McNicoll, E. F. and Metag, V. and Middleton, D. G. and Mushkarenkov, A. and Nefkens, B. M. K. and Nikolaev, A. and Novotny, R. and Oberle, M. and Ostrick, M. and Owens, R. O. and Otte, P. B. and Oussena, B. and Pedroni, P. and Polonski, A. and Prakhov, S. and Rosner, G. and Rostomyan, T. and Schumann, S. and Sikora, M. H. and Sober, D. I. and Starostin, A. and Strakovsky, I. I. and Suarez, I. M. and Supek, I. and Tarbert, C. M. and Thiel, M. and Thomas, A. and Unverzagt, M. and Watts, D. P. and Werthmueller, D. and Witthauer, L.. (2013) Measurements of C-12((gamma)over-right-arrow, pp) photon asymmetries for E-gamma=200-450 MeV. The European physical journal. A, Hadrons and nuclei, Vol. 49, H. 5. p. 65.

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Official URL: http://edoc.unibas.ch/dok/A6223421

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The C-12((gamma) over right arrow, pp) reaction has been studied in the photon energy range 200-450 MeV at the Mainz microtron MAMI-C, where linearly polarised photons were energy-tagged using the Glasgow-Mainz Tagged Photon Spectrometer and protons were detected in the Crystal Ball detector. The photon asymmetry Sigma has been measured over a wider E-gamma range than previous measurements. The strongest asymmetries were found at low missing energies where direct emission of nucleon pairs is expected. Cuts on the difference in azimuthal angles of the two ejected protons increased the magnitude of the observed asymmetries. At low missing energies the Sigma data exhibit a strong angular dependence, similar to deuteron photodisintegration.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Hadronenphysik (Krusche)
UniBasel Contributors:Krusche, Bernd
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:27 Mar 2014 13:12
Deposited On:27 Mar 2014 13:12

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