Experimental check of the Gerasimov-Drell-Hearn sum rule for 1H.

H Dutz,V Lisin,B Kiel,A Braghieri,T Pinelli,D Menze,G Tamas,R Van De Vyver,E Heid,N D’Hose,B Schoch,F Frommberger,T Iwata,T Speckner,J Krimmer,P Jennewein,R Leukel,C Bradtke,G Reicherz,T Rostomyan,P Grabmayr,B Lannoy,G Anton,J Naumann,J Harmsen,R Beck,F Zapadtka,H Holvoet,P Pedroni,J Ahrens,W Hillert,K Helbing,W Meyer,W Weihofen,S Hasegawa,N Horikawa,I Preobrajenski,S Altieri,A Thomas,M Schumacher,A Panzeri,G Zeitler,R Kondratiev,Michelle Sauer ,J R M Annand ,M Gódo ,Thilo Michel ,Edgar Radtke ,Ch Rohlof ,Luc Van Hoorebeke ,H J Arends ,Andreas Böck ,Μ Lang ,W Von Drachenfels ,Frank Klein ,Kurt Schaldemose Hansen ,Stefan Goertz

doi:10.1103/physrevlett.93.032003

Experimental check of the Gerasimov-Drell-Hearn sum rule for 1H.

H Dutz, V Lisin + Show 55 more

https://doi.org/10.1103/physrevlett.93.032003

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Journal: Physical Review Letters	Publication Date: Jul 1, 2004
Citations: 65

Affiliation: University of Bonn, University of Erlangen-Nuremberg, University of Pavia, Ghent University, University of Tübingen, Johannes Gutenberg University Mainz, Ruhr University Bochum, University of Göttingen, Nagoya University

#Gerasimov-Drell-Hearn #Tagged Photon Facilities + Show 8 more

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Abstract

For the first time we checked the fundamental Gerasimov-Drell-Hearn (GDH) sum rule for the proton experimentally in the photon energy range from 0.2-2.9 GeV with the tagged photon facilities at MAMI (Mainz) and ELSA (Bonn). New data of the doubly polarized total cross section difference are presented in the energy range from 1.6 to 2.9 GeV. The contribution to the GDH integral from 0.2-2.9 GeV yields [254+/-5(stat)+/-12(syst)] microb with negative contributions in the Regge regime at photon energies above 2.1 GeV. This trend supports the validity of the GDH sum rule.

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