The Static Penta-quark Potential in Lattice QCD
Fumiko Okiharu, Hideo Suganuma, Toru T. Takahashi
Abstract
We perform the first study for the static penta-quark (5Q) potential in lattice QCD with β=6.0 and 163 × 32 at the quenched level. Accurate results of the 5Q potential are extracted from the 5Q Wilson loop using the smearing method, which enhances the ground-state component. The tetra-quark potential for the QQ- Q Q system is also studied in lattice QCD. The multi-quark potentials are found to be well described as a sum of the one-gluon-exchange Coulomb term and the multi-Y linear confinement term based on the flux-tube picture.
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