# 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 oneand two-body seagulls. The seagull operators are analyzed in detail, and their relations with freeand bound-nucleon polarizabilities are discussed. It is found that both dipole and higher-order polarizabilities of the nucleon are required 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. PACS: 25.20.Dc, 13.60.Fz

### Cite this paper

@inproceedings{Levchuk2000scatteringBP, title={scattering below pion photoproduction threshold}, author={Michael Levchuk and A . I . L ’ vov}, year={2000} }