%0 Journal Article
%T Compton Scattering by the Proton
%A G. Galler
%A V. Lisin
%A R. Kondratiev
%A A. M. Massone
%A S. Wolf
%A J. Ahrens
%A H. -J. Arends
%A R. Beck
%A M. Camen
%A G. P. Capitani
%A P. Grabmayr
%A S. J. Hall
%A F. H£¿rter
%A T. Hehl
%A P. Jennewein
%A K. Kossert
%A A. I. L'vov
%A C. Molinari
%A P. Ottonello
%A J. Peise
%A I. Preobrajenski
%A S. Proff
%A A. Robbiano
%A M. Sanzone
%A M. Schumacher
%A M. Schmitz
%A F. Wissmann
%J Physics
%D 2001
%I arXiv
%R 10.1016/S0370-2693(01)00231-3
%X Compton scattering by the proton has been measured over a wide range covering photon energies 250 MeV < E_\gamma < 800 MeV and photon scattering angles 30^0 < \theta^{lab}_\gamma < 150^0, using the tagged-photon facility at MAMI (Mainz) and the large-acceptance arrangement LARA. The data are in good agreement with the dispersion theory based on the SAID-SM99K parameterization of photo-meson amplitudes. From the subset of data between 280 and 360 MeV the resonance pion-photoproduction amplitudes were evaluated leading to the multipole E2/M1 ratio EMR(340 MeV) =(-1.6 \pm 0.4(stat+syst) \pm 0.2(model)%. From all data below 455 MeV the proton's backward spin polarizability was determined to be \gamma_\pi=(-37.9 \pm 0.6(stat+syst) \pm 3.5(model))x10^{-4}fm^4.
%U http://arxiv.org/abs/nucl-ex/0102003v1