Nucleon Form Factors in a Covariant Diquark-Quark Model
High Energy Physics - Phenomenology
2016-09-06 v1 Nuclear Theory
Abstract
In a model where constituent quarks and diquarks interact through quark exchange the Bethe-Salpeter equation in ladder approximation for the nucleon is solved. Quark and diquark confinement is effectively parametrized by choosing appropriately modified propagators. The coupling to external currents is implemented via nontrivial vertex functions for quarks and diquarks to ensure gauge invariance at the constituent level. Nucleon matrix elements are evaluated in a generalised impulse approximation, and electromagnetic, pionic and axial form factors are calculated.
Keywords
Cite
@article{arxiv.hep-ph/9705267,
title = {Nucleon Form Factors in a Covariant Diquark-Quark Model},
author = {G. Hellstern. R. Alkofer and M. Oettel and H. Reinhardt},
journal= {arXiv preprint arXiv:hep-ph/9705267},
year = {2016}
}
Comments
33 Pages, 10 figures, modfied elsart.sty included