Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1999-09-28
Nucl.Phys.A674:449-492,2000
Physics
Nuclear Physics
Nuclear Theory
48 pages, 16 figures, final version; discussion is slightly extended, a few references added, a figure for asymmetry is replac
Scientific paper
10.1016/S0375-9474(00)00145-7
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.
L'vov A. I.
Levchuk M. I.
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