Static hybrid quarkonium potential with improved staggered quarks

C.E. DeTar (U Utah); D. Toussaint (U Arizona); E. Gregory (U Arizona); J. Osborn (U Utah); MILC Collaboration: C. Bernard (Washington U); R.L. Sugar (UC Santa Barbara); Steven Gottlieb (U Indiana); T. Burch (U Arizona); U.M. Heller (CSIT FSU); Ziwen Fu (U Utah)

arxiv: hep-lat/0209051 · v1 · submitted 2002-09-03 · ✦ hep-lat

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)

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R.L. Sugar (UC Santa Barbara) D. Toussaint (U Arizona)

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classification ✦ hep-lat

keywords quarksimprovedpotentialpotentialsstaggeredstaticanalysisantiquark

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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 $\Sigma^{\prime+}_g$ and $\Pi_u$ 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.

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Static hybrid quarkonium potential with improved staggered quarks

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