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

Författare:
  • 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
Publiceringsår: 2004
Språk: Engelska
Publikation/Tidskrift/Serie: Physical Review Letters
Volym: 93
Nummer: 3
Dokumenttyp: Artikel
Förlag: American Physical Society

Sammanfattning

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.

Disputation

Nyckelord

  • Physics and Astronomy

Övrigt

Published
Yes
  • ISSN: 0031-9007

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