First study of the three-gluon static potential in Lattice QCD

Abstract

We estimate the potential energy for a system of three static gluons in Lattice QCD. This is relevant for the different models of three-body glueballs have been proposed in the literature, either for gluons with a constituent mass, or for massless ones. A Wilson loop adequate to the static hybrid three-body system is developed. We study different spacial geometries, to compare the starfish model with the triangle model, for the three-gluon potential. We also study two different colour structures, symmetric and antisymmetric, and compare the respective static potentials. A first simulation is performed in a $24^3\times 48$ periodic Lattice, with $\beta =6.2$ and $a\sim 0.072$ fm.

Comments: 8 pages, 10 figures