Nucleon and Delta in a covariant quark-diquark model
Nuclear Theory
2007-05-23 v1 High Energy Physics - Phenomenology
Abstract
We develop a formally covariant quark-diquark model of the nucleon. The nucleon is treated as a bound state of a constituent quark and a diquark interacting via a quark exchange. We include both scalar and axial-vector diquarks. The underlying Bethe-Salpeter equation is transformed into a pair of coupled Salpeter equations. The space- and timelike electromagnetic form factors of the nucleon are calculated in the Mandelstam formalism for squared momentum transfers up to 3 (GeV/c)^2 above threshold. The model is applied also to the Delta(3/2).
Keywords
Cite
@article{arxiv.nucl-th/9612018,
title = {Nucleon and Delta in a covariant quark-diquark model},
author = {Volker Keiner},
journal= {arXiv preprint arXiv:nucl-th/9612018},
year = {2007}
}
Comments
9 pages, LaTeX, 13 figures, uses sprocl.sty (included) from World Scientific; talk given at 'Diquarks 3', Torino, Oct. 28-30, 1996; to appear in the proceedings