Deuteron Compton scattering below pion photoproduction threshold
Abstract
Deuteron Compton scattering below pion photoproduction threshold is considered in the framework of the nonrelativistic diagrammatic approach with the Bonn OBE potential. A complete gauge-invariant set of diagrams is taken into account which includes resonance diagrams without and with NN-rescattering and diagrams with one- and two-body seagulls. The seagull operators are analyzed in detail, and their relations with free- and bound-nucleon polarizabilities is discussed. It is found that both dipole and higher-order polarizabilities of the nucleon are needed for a quantitative description of recent experimental data. An estimate of the isospin-averaged dipole electromagnetic polarizabilities of the nucleon and the polarizabilities of the neutron is obtained from the data.
Cite
@article{arxiv.nucl-th/9909066,
title = {Deuteron Compton scattering below pion photoproduction threshold},
author = {M. I. Levchuk and A. I. L'vov},
journal= {arXiv preprint arXiv:nucl-th/9909066},
year = {2008}
}
Comments
48 pages, 16 figures, final version; discussion is slightly extended, a few references added, a figure for asymmetry is replaced