Octet and Decuplet masses: a covariant three-body Faddeev calculation
High Energy Physics - Phenomenology
2014-11-11 v1
Abstract
We determine the baryon octet and decuplet masses as well as their wave functions in a covariant three-body Faddeev approach. We work in an approximation where irreducible three-body forces are neglected. In the two-body interactions we take into account a well explored rainbow-ladder kernel as well as flavor dependent meson-exchange terms motivated from the underlying quark-gluon interaction. Without flavor dependent forces we find agreement with the experimental spectrum on the 5-10 percent level. Including the flavor dependent terms on an exploratory level delivers a Sigma/Lambda splitting with the correct sign although the magnitude is still too small.
Keywords
Cite
@article{arxiv.1408.5577,
title = {Octet and Decuplet masses: a covariant three-body Faddeev calculation},
author = {Helios Sanchis-Alepuz and Christian S. Fischer},
journal= {arXiv preprint arXiv:1408.5577},
year = {2014}
}
Comments
11 pages, 2 figures