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Experimental Studies of the Gerasimov-Drell-Hearn Sum Rules

Conference paper
Part of the Few-Body Systems book series (FEWBODY, volume 14)

Abstract

The Gerasimov-Drell-Hearn sum rule, which was originally derived at Q 2 = 0, has been extended recently to finite Q 2. The measurement of its Q 2 behavior provides a powerful way to investigate the transition between the partonic and hadronic description of QCD. I recall first the theoretical grounds of GDH. Then new experimental results on both the original and extended sum rules are discussed. Here, I focus on the results obtained in Hall A at Jefferson Lab. I will conclude by presenting the experimental perspectives, both at low Q 2 and at large photon energies.

Keywords

Deep Inelastic Scattering Chiral Perturbation Theory High Resolution Spectrometer Hadronic Degree Pion Photo 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag/Wien 2003

Authors and Affiliations

  • A. Deur
    • 1
  1. 1.University of VirginiaUSA

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