Pion couplings of the Delta(1232)
High Energy Physics - Phenomenology
2013-04-16 v1 Nuclear Theory
Abstract
We calculate the strong couplings of pions to the Delta(1232) resonance using a QCD parameterization method that includes in addition to the usual one-quark also two-quark and previously uncalculated three-quark operators. We find that three-quark operators are necessary to obtain results consistent with the data and other QCD based baryon structure models. Our results are also in quantitative agreement with a model employing large D state admixtures to the nucleon and Delta wave functions indicating that the pion-nucleon and pion-Delta couplings are sensitive to the spatial shape of these baryons.
Keywords
Cite
@article{arxiv.1304.2194,
title = {Pion couplings of the Delta(1232)},
author = {Alfons J. Buchmann and Steven A. Moszkowski},
journal= {arXiv preprint arXiv:1304.2194},
year = {2013}
}
Comments
5 pages, 1 figure