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

Summary, in English

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)] mub with negative contributions in the Regge regime at photon energies above 2.1 GeV. This trend supports the validity of the GDH sum rule.

• Author: H Dutz; K Helbing; J Krimmer; T Speckner; G Zeitler; J Ahrens; S Altieri; JRM Annand; G Anton; HJ Arends; R Beck; A Bock; C Bradtke; A Braghieri; W von Drachenfels; F Frommberger; M Godo; S Goertz; P Grabmayr; S Hasegawa; Kurt Hansen; J Harmsen; E Heid; W Hillert; H Holvoet; N Horikawa; T Iwata; L Van Hoorebeke; N d'Hose; P Jennewein; B Kiel; F Klein; R Kondratiev; M Lang; B Lannoy; R Leukel; V Lisin; D Menze; W Meyer; T Michel; J Naumann; A Panzeri; P Pedroni; T Pinelli; I Preobrajenski; E Radtke; G Reicherz; C Rohlof; T Rostomyan; M Sauer; B Schoch; M Schumacher; G Tamas; A Thomas; R van de Vyver; W Weihofen; F Zapadtka
• Department/s: MAX IV Laboratory
• Publishing year: 2004
• Language: English
• Publication/Series: Physical Review Letters
• Volume: 93
• Issue: 3
• Links: http://dx.doi.org/10.1103/PhysRevLett.93.032003
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Physical Sciences; Natural Sciences
• Status: Published
• ISBN/ISSN/Other: ISSN: 1079-7114