Frame Dependence of the Pair Contribution to the Pion Electromagnetic Form Factor in a Light-Front Approach
High Energy Physics - Phenomenology
2007-05-23 v1 Nuclear Theory
Abstract
The frame dependence of the pair-term contribution to the electromagnetic form factor of the pion is studied within the Light Front approach. A symmetric ansatz for the pion Bethe-Salpeter amplitude with a pseudo scalar coupling of the constituent to the pion field is used. In this model, the pair term vanishes for the Drell-Yan condition, while it is dominant for momentum transfer along the light-front direction.
Cite
@article{arxiv.hep-ph/0212267,
title = {Frame Dependence of the Pair Contribution to the Pion Electromagnetic Form Factor in a Light-Front Approach},
author = {J. P. B. C. de Melo and T. Frederico and E. Pace and G. Salme},
journal= {arXiv preprint arXiv:hep-ph/0212267},
year = {2007}
}
Comments
To appear Brazilian Journal of Physics, BJP (2003), 5 pages, use revtex and epsfig, 3 figures