Generalized polarizabilities and the spin-averaged amplitude in virtual Compton scattering off the nucleon
Nuclear Theory
2008-11-26 v1 High Energy Physics - Phenomenology
Abstract
We discuss the low-energy behavior of the spin-averaged amplitude of virtual Compton scattering (VCS) 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.
Keywords
Cite
@article{arxiv.nucl-th/9608061,
title = {Generalized polarizabilities and the spin-averaged amplitude in virtual Compton scattering off the nucleon},
author = {D. Drechsel and G. Knoechlein and A. Metz and S. Scherer},
journal= {arXiv preprint arXiv:nucl-th/9608061},
year = {2008}
}
Comments
13 pages, 1 postscript figure, Revtex using epsf