Static hybrid quarkonium potential with improved staggered quarks
MILC Collaboration, C. Bernard, T. Burch, C. E. DeTar, Ziwen Fu, Steven Gottlieb, E. Gregory, U. M. Heller, J. Osborn, R. L. Sugar, D. Toussaint
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 Σ+g and Πu 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.
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