Pion Eletromagnetic Current in the Ligth-Cone Formalism
High Energy Physics - Phenomenology
2009-10-30 v1
Abstract
The electromagnetic form factor of the pion is calculated in a pseudoscalar field theoretical model which constituent quarks. We extract the form factor using the "+" component of the electromagnetic current in the light-cone formalism. For comparison, we also compute the form factor in the covariant framework and we obtain perfect agreement. It is shown that the pair terms do not contribute in this pseudoscalar model. This explains why a naive light-cone calculation, i.e., omitting pair terms from the onset, also yields the same results.
Cite
@article{arxiv.hep-ph/9710228,
title = {Pion Eletromagnetic Current in the Ligth-Cone Formalism},
author = {J. P. B. C. de Melo and H. W. L. Naus and T. Frederico},
journal= {arXiv preprint arXiv:hep-ph/9710228},
year = {2009}
}
Comments
11 pages,include figure (pion.eps), use latex,epsf e-mail: nau@itp.uni-hannover.de, pacheco@axpfep1.if.usp.br and tobias@fis.ita.cta.br Submitted to Phys.Letters. B (1997)