Lattice QCD study of the heavy-heavy-light quark potential
Abstract
We study the heavy-heavy-light quark () potential in SU(3) quenched lattice QCD, and discuss one of the roles of the finite-mass valence quark in the inter-quark potential. Monte Carlo simulations are performed with the standard gauge action on the lattice at and the -improved Wilson fermion action at four hopping parameters. For statistical improvement, the gauge configuration is fixed with the Coulomb gauge. We calculate the potential energy of systems as a function of the inter-heavy-quark distance in the range of 0.8 fm. The potential is well described with a Coulomb plus linear potential, and the effective string tension between the two heavy quarks is significantly smaller than the string tension GeV/fm. It would generally hold that the effect of the finite-mass valence quark reduces the inter-two-quark confinement force in baryons.
Cite
@article{arxiv.0806.3554,
title = {Lattice QCD study of the heavy-heavy-light quark potential},
author = {Arata Yamamoto and Hideo Suganuma and Hideaki Iida},
journal= {arXiv preprint arXiv:0806.3554},
year = {2008}
}