Helicity-dependent photoabsorption cross sections on the nucleon
Nuclear Theory
2009-11-11 v1 High Energy Physics - Experiment
High Energy Physics - Phenomenology
Nuclear Experiment
Abstract
We 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.
Cite
@article{arxiv.nucl-th/0508064,
title = {Helicity-dependent photoabsorption cross sections on the nucleon},
author = {R. A. Arndt and W. J. Briscoe and I. I. Strakovsky and R. L. Workman},
journal= {arXiv preprint arXiv:nucl-th/0508064},
year = {2009}
}
Comments
7 pages, 5 figure