Dispersion relation formalism for virtual Compton scattering and the generalized polarizabilities of the nucleon
High Energy Physics - Phenomenology
2016-09-06 v1
Abstract
A dispersion relation formalism for the virtual Compton scattering (VCS) reaction on the proton is presented, which for the first time allows a dispersive evaluation of 4 generalized polarizabilities at a four-momentum transfer 0.5 GeV. The dispersive integrals are calculated using a state-of-the-art pion photo- and electroproduction analysis. The dispersion formalism provides a new tool to analyze VCS experiments above pion threshold, thus increasing the sensitivity to the generalized polarizabilities of the nucleon.
Keywords
Cite
@article{arxiv.hep-ph/0007144,
title = {Dispersion relation formalism for virtual Compton scattering and the generalized polarizabilities of the nucleon},
author = {B. Pasquini and D. Drechsel and M. Gorchtein and A. Metz and M. Vanderhaeghen},
journal= {arXiv preprint arXiv:hep-ph/0007144},
year = {2016}
}
Comments
4 pages, 2 figures