First measurement of the helicity-dependent gamma p to p eta differential cross-section

Ahrens, J. et al. (2003) First measurement of the helicity-dependent gamma p to p eta differential cross-section. European Physical Journal A, 17(2), 241 -244. (doi: 10.1140/epja/i2002-10153-2)

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The helicity dependence of the gamma p to p eta reaction has been measured for the first time at a center-of-mass angle theta /sub eta //sup */=70 degrees in the photon energy range from 780 MeV to 790 MeV. The experiment, performed at the Mainz microtron MAMI, used a 4 pi -detector system, a circularly polarized, tagged photon beam, and a longitudinally polarized frozen-spin target. The helicity 3/2 cross-section is found to be small and the results for helicity 1/2 agree with predictions from the MAID analysis.

Item Type:Articles
Additional Information:Thomson UT: 184224900010
Glasgow Author(s) Enlighten ID:Seitz, Dr Bjoern and Annand, Dr John and Rosner, Professor Guenther
Authors: Ahrens, J., Altieri, S., Annand, J.R.M., Anton, G., Arends, H.J., Aulenbacher, K., Beck, R., Bradtke, C., Braghieri, A., d'Hose, N., Drechsel, D., Dutz, H., Goertz, S., Grabmayr, P., Hansen, K., Harmsen, J., von Harrach, D., Hasegawa, S., Hasegawa, T., Heid, E., Helbing, K., Holvoet, H., Van Hoorebeke, L., Horikawa, N., Iwata, T., Jahn, O., Jennewein, P., Kageya, T., Kiel, B., Klein, F., Kondratiev, R., Kossert, K., Krimmer, J., Lang, M., Lannoy, B., Leukel, R., Lisin, V., Matsuda, T., McGeorge, J.C., Meier, A., Menze, D., Meyer, W., Michel, T., Naumann, J., Panzeri, A., Pedroni, P., Pinelli, T., Preobrajenski, I., Radtke, E., Reichert, E., Reicherz, G., Rohlof, C., Rosner, G., Ryckbosch, D., Sauer, M., Schoch, B., Schumacher, M., Seitz, B., Speckner, T., Takabayashi, N., Tamas, G., Thomas, A., Van de Vyver, R., Wakai, A., Weihofen, W., Wissmann, F., Zapadtka, F., and Zeitler, G.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:European Physical Journal A
ISSN (Online):1434-601X

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