Heavy Quark Interactions and Quarkonium Binding

Details Heavy Quark Interactions and Quarkonium Binding Heavy Quark Interactions and Quarkonium Binding

2008-12-19

arxiv.org/abs/0812.3829v2

J.Phys.G36:064011,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 8 Figures; invited talk at "Strangeness in Quark Matter 2008", Beijing/China, to appear in the Proceedings

Scientific paper

10.1088/0954-3899/36/6/064011

We consider heavy quark interactions in quenched and unquenched lattice QCD. In a region just above the deconfinement point, non-Abelian gluon polarization leads to a strong increase in the binding. Comparing quark-antiquark and quark-quark interaction, the dependence of the binding on the separation distance $r$ is found to be the same for the colorless singlet $Q\bar Q$ and the colored anti-triplet $QQ$ state. In a potential model description of in-medium $J/\Psi$ behavior, this enhancement of the binding leads to a survival up to temperatures of 1.5 $T_c$ or higher; it could also result in $J/\Psi$ flow.

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