Helicity Amplitudes and Sum Rules for Real and Virtual Photons
Nuclear Theory
2017-08-23 v1
Abstract
Results of the recently developed unitary isobar model (MAID) are presented for helicity amplitudes, spin asymmetries, structure functions and relevant sum rules for real and virtual photons in the resonance region. Our evaluation of the energy-weighted integrals is in good agreement for the proton but shows big discrepancies for the neutron.
Keywords
Cite
@article{arxiv.nucl-th/0012045,
title = {Helicity Amplitudes and Sum Rules for Real and Virtual Photons},
author = {Lothar Tiator},
journal= {arXiv preprint arXiv:nucl-th/0012045},
year = {2017}
}
Comments
10 pages LaTeX including 3 figures, Talk given at the GDH 2000 Conference, Mainz, June 14-17, 2000; to be published in World Scientific