Experimental Check of the Gerasimov-Drell-Hearn Sum Rule for H1

H. Dutz et al. (GDH Collaboration)
Phys. Rev. Lett. 93, 032003 – Published 16 July 2004

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

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 21 February 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.032003

©2004 American Physical Society

Authors & Affiliations

Click to Expand

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 93, Iss. 3 — 16 July 2004

Reuse & Permissions

1923: Compton shows light’s particle nature
View timeline|#PhysRev125
Access Options
Announcement
Information on SCOAP3 and Physical Review journals
January 3, 2018

High Energy Physics (HEP) papers published after January 1, 2018 in Physical Review Letters, Physical Review C, and Physical Review D are published open access, paid for centrally by SCOAP3. Library subscriptions will be modified accordingly. This arrangement will initially last for two years, up to the end of 2019.

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×