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Helicity dependence of gammap --> Npi below 450 MeV and contribution to the Gerasimov-Drell-Hearn sum rule.
Ahrens, J; Altieri, S; Annand, J R; Anton, G; Arends, H; 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.
Afiliação
  • Ahrens J; Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany. arends@kph.uni-mainz.de
Phys Rev Lett ; 84(26 Pt 1): 5950-4, 2000 Jun 26.
Article em En | MEDLINE | ID: mdl-10991096
ABSTRACT
The helicity dependence of the single pion photoproduction on the proton has been measured in the energy range from 200 to 450 MeV for the first time. The experiment, performed at the Mainz microtron MAMI, used a 4pi-detector system, a circularly polarized, tagged photon beam, and a frozen-spin target. The data obtained provide new information for multipole analyses of pion photoproduction and determine the main contributions to the Gerasimov-Drell-Hearn sum rule and the forward spin polarizability gamma(0).
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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2000 Tipo de documento: Article País de afiliação: Alemanha
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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2000 Tipo de documento: Article País de afiliação: Alemanha