Measurement of helicity-dependent photoabsorption cross sections on the neutron from 815 to 1825 MeV

Summary, in English

Helicity-dependent total photoabsorption cross sections on the deuteron have been measured for the first time at ELSA (Bonn) in the photon energy range from 815 to 1825 MeV. Circularly polarized tagged photons impinging on a longitudinally polarized LiD target have been used together with a highly efficient 4 pi detector system. The data around 1 GeV are not compatible with predictions from existing multipole analyses. From the measured energy range an experimental contribution to the GDH integral on the neutron of [33.9 +/- 5.5(stat)+/- 4.5(syst)] mu b is extracted.

• 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: 2005
• Language: English
• Publication/Series: Physical Review Letters
• Volume: 94
• Links: http://dx.doi.org/10.1103/PhysRevLett.94.162001
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Physical Sciences; Natural Sciences
• Status: Published
• ISBN/ISSN/Other: ISSN: 1079-7114