Deuteron Compton scattering below pion photoproduction threshold

被引：57
|
作者：
Levchuk, MI
L'vov, AI
机构：
[1] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 117924, Russia
[2] Belarus Natl Acad Sci, BI Stepanov Inst Phys, Minsk 220072, BELARUS
来源：
NUCLEAR PHYSICS A | 2000年 / 674卷 / 3-4期
基金：
俄罗斯基础研究基金会;
关键词：
Compton scattering; electromagnetic polarizabilities; deuteron; neutron; meson-exchange currents; seagulls;
D O I：
10.1016/S0375-9474(00)00145-7
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
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 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. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：449 / 492
页数：44
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