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23 May 2022
 
  » arxiv » nucl-th/0508064

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Helicity-dependent photoabsorption cross sections on the nucleon
R.A. Arndt ; W.J. Briscoe ; I.I. Strakovsky ; R.L. Workman ;
Date 29 Aug 2005
Subject nucl-th hep-ex hep-ph nucl-ex
AffiliationGWU
AbstractWe examine the energy dependence of single-meson photoproduction as it contributes to the Gerasimov-Drell-Hearn (GDH) sum rule. For photon energies above approximately 1 GeV, through the full resonance region, this contribution dominates the proton sum rule integral. Over the same energy region, our single-pion contribution to the neutron sum rule also qualitatively follows a recent set of GDH data. The predicted neutral-pion contribution to the neutron sum rule is nearly zero above 1 GeV in this result. The SAID and Mainz (MAID) results are very different for a number of observables over this energy region.
Source arXiv, nucl-th/0508064
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