Heavy Quarkonia at High Temperature

Details Heavy Quarkonia at High Temperature Heavy Quarkonia at High Temperature

1997-07-15

arxiv.org/abs/hep-lat/9707012v1

Phys.Lett. B424 (1998) 343-354

Physics

High Energy Physics

High Energy Physics - Lattice

17 pages of LaTeX with 26 PostScript figures, uses elsart style file

Scientific paper

10.1016/S0370-2693(98)00205-6

We present a new method to study the properties of heavy quarks at finite temperature. It combines non-relativistic QCD with an improved gluonic action on anisotropic lattices. The efficiency of the approach is demonstrated by the first non-perturbative calculation of the temperature dependence of low-lying quarkonium "pole" masses. For ground state meson masses in the region between charmonium and bottomonium we find only very little variation up to our highest temperature which corresponds to T approximately 1.2 Tc while first excited states indicate a large mass shift.

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