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

J. Ahrens, S. Altieri, J. R.M. Annand, G. Anton, H. J. Arends, K. Aulenbacher, R. Beck, C. Bradtke, A. Braghieri, N. Degrande, N. D'Hose, H. Dutz, S. Goertz, P. Grabmayr, K. Hansen, J. Harmsen, D. Von Harrach, S. Hasegawa, T. Hasegawa, E. HeidK. Helbing, H. Holvoet, L. Van Hoorebeke, N. Horikawa, T. Iwata, P. Jennewein, T. Kageya, B. Kiel, F. Klein, R. Kondratiev, K. Kossert, J. Krimmer, M. Lang, B. Lannoy, R. Leukel, V. Lisin, T. Matsuda, J. C. McGeorge, A. Meier, D. Menze, W. Meyer, T. Michel, J. Naumann, R. O. Owens, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, E. Radtke, E. Reichert, G. Reicherz, Ch Rohlof, D. Ryckbosch, F. Sadiq, M. Sauer, B. Schoch, M. Schumacher, B. Seitz, T. Speckner, M. Steigerwald, N. Takabayashi, G. Tamas, A. Thomas, R. Van De Vyver, A. Wakai, W. Weihofen, F. Wissman, F. Zapadtka, G. Zeitler

Research output: Contribution to journalArticlepeer-review

155 Citations (Scopus)


The helicity dependence of the total photoabsorption cross section on the proton in the photon energy range from 200 to 800 MeV was observed. Data was obtained that give important experimental information about the Gerasimov-Drell-Hearn (GDH) sum rule and the forward spin polarizability γ.

Original languageEnglish
Article number022003
Pages (from-to)022003/1-022003/5
JournalPhysical Review Letters
Issue number2
Publication statusPublished - Jul 9 2001
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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