Static hybrid quarkonium potential with improved staggered quarks
MILC Collaboration: C. Bernard (Washington U), T. Burch (U Arizona),, C.E. DeTar (U Utah), Ziwen Fu (U Utah), Steven Gottlieb (U Indiana), E., Gregory (U Arizona), U.M. Heller (CSIT FSU), J. Osborn (U Utah), R.L. Sugar, (UC Santa Barbara), D. Toussaint (U Arizona)
TL;DR
This paper investigates how light dynamical quarks influence the excitation energies of flux tubes in quark-antiquark systems, comparing quenched and unquenched lattice QCD configurations.
Contribution
It provides preliminary results on the static quark potential and specific excited state potentials using improved staggered quarks in lattice QCD.
Findings
Measured potentials on matched ensembles
Compared quenched and unquenched configurations
Analyzed ground and excited state potentials
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 and 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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