Static hybrid quarkonium potential with improved staggered quarks

Abstract

We are studying the effects of light dynamical quarks on the excitation energies of a flux tube between a static quark and antiquark. We report preliminary results of an analysis of the ground state potential and the $\hat{I}{\pounds }_g^{\prime +}$ and ${\hat{I}}_u$ potentials. We have measured these potentials on closely matched ensembles of gauge configurations, generated in the quenched approximation and with 2+1 flavors of Asqtad improved staggered quarks.

Lattice2002(heavyquark)