We study the dispersion relations of mesons and baryons built from Brillouin quarks on one N_f=2 gauge ensemble provided by QCDSF. For quark masses up to the physical strange quark mass, there is hardly any improvement over the Wilson discretization, if either action is link-smeared and tree-level clover improved. For quark masses in the range of the physical charm quark mass, the Brillouin action still shows a perfect relativistic behavior, while the Wilson action induces severe cut-off effects. As an application we determine the masses of the \Omega_c^0, \Omega_{cc}^+ and \Omega_{ccc}^{++} baryons on that ensemble.
@article{arxiv.1208.6270,
title = {Meson and Baryon dispersion relations with Brillouin fermions},
author = {Stephan Durr and Giannis Koutsou and Thomas Lippert},
journal= {arXiv preprint arXiv:1208.6270},
year = {2013}
}
Comments
16 pages, 9 figures, 4 tables; v2: one Reference added, matches published version