Delta and Omega electromagnetic form factors in a Dyson-Schwinger/Bethe-Salpeter approach
High Energy Physics - Phenomenology
2011-01-17 v2 High Energy Physics - Lattice
Nuclear Theory
Abstract
We investigate the electromagnetic form factors of the Delta and the Omega baryons within the Poincare-covariant framework of Dyson-Schwinger and Bethe-Salpeter equations. The three-quark core contributions of the form factors are evaluated by employing a quark-diquark approximation. We use a consistent setup for the quark-gluon dressing, the quark-quark bound-state kernel and the quark-photon interaction. Our predictions for the multipole form factors are compatible with available experimental data and quark-model estimates. The current-quark mass evolution of the static electromagnetic properties agrees with results provided by lattice calculations.
Keywords
Cite
@article{arxiv.1008.3184,
title = {Delta and Omega electromagnetic form factors in a Dyson-Schwinger/Bethe-Salpeter approach},
author = {Diana Nicmorus and Gernot Eichmann and Reinhard Alkofer},
journal= {arXiv preprint arXiv:1008.3184},
year = {2011}
}
Comments
16 pages, 7 figures, 1 table, added references