Generalized polarizabilities and the spin-averaged amplitude in virtual Compton scattering off the nucleon

被引：67

作者：

Drechsel, D

Knochlein, G

Metz, A

Scherer, S

机构：

[1] Institut für Kernphysik, Johannes Gutenberg-Universität, Mainz, D-55099

来源：

PHYSICAL REVIEW C | 1997年 / 55卷 / 01期

关键词：

D O I：

10.1103/PhysRevC.55.424

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：

We discuss the low-energy behavior of the spin-averaged amplitude of virtual Compton scattering off a nucleon. Based on gauge invariance, Lorentz invariance, and the discrete symmetries, it is shown that to first order in the frequency of the final real photon only two generalized polarizabilities appear. Different low-energy expansion schemes are discussed and put into perspective.

引用

页码：424 / 430

页数：7