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arXiv · 1208.6270

Meson and Baryon dispersion relations with Brillouin fermions

Stephan Durr·Giannis Koutsou·Thomas Lippert
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Abstract

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 Ω_c^0, Ω_{cc}^+ and Ω_{ccc}^{++} baryons on that ensemble.

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Stephan Durr, Giannis Koutsou, Thomas Lippert. 2013-04-05. Meson and Baryon dispersion relations with Brillouin fermions. https://doi.org/10.1103/physrevd.86.114514

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