First measurement of the Gerasimov-Drell-Hearn integral for 1H from 200 to 800 MeV

Ahrens, J. et al. (2001) First measurement of the Gerasimov-Drell-Hearn integral for 1H from 200 to 800 MeV. Physical Review Letters, 8702(2), art 022003. (doi:10.1103/PhysRevLett.87.022003)

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A direct measurement of the helicity dependence of the total photoabsorption cross section an the proton was carried out at MAMI (Mainz) in the energy range 200 lt E-[gamma] lt 800 MeV. The experiment used a 4[pi] detection system, a circularly polarized. tagged photon beam, and a frozen spin target. The contributions to the Gerasimov-Drell-Hearn sum rule and to the forward spin polarizability gamma (0) determined from the data are 226 +/- 5(stat) +/- 12(syst) mub and -187 +/- 8(stat) +/- 10(syst) x 10(-6) fm(4), respectively, for 200 lt E-[gamma] lt 800 MeV.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Seitz, Dr Bjoern and Owens, Professor Robert and Annand, Dr John
Authors: Ahrens, J., Altieri, S., Annand, J.R.M., Anton, G., Arends, H.J., Aulenbacher, K., Beck, R., Bradtke, C., Braghieri, A., Degrande, N., d'Hose, N., 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., 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., Owens, R.O., Panzeri, A., Pedroni, P., Pinelli, T., Preobrajenski, I., Radtke, E., Reichert, E., Reicherz, G., Rohlof, C., Ryckbosch, D., Sadiq, F., Sauer, M., Schoch, B., Schumacher, M., Seitz, B., Speckner, T., Steigerwald, M., 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:Physical Review Letters
Publisher:American Physical Society
ISSN (Online):1079-7114

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