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      \(J/\psi\) and \(\eta_c\) in the Deconfined Plasma from Lattice QCD

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          Abstract

          Analyzing correlation functions of charmonia at finite temperature (\(T\)) on \(32^3\times(32-96)\) anisotropic lattices by the maximum entropy method (MEM), we find that \(J/\psi\) and \(\eta_c\) survive as distinct resonances in the plasma even up to \(T \simeq 1.6 T_c\) and that they eventually dissociate between \(1.6 T_c\) and \(1.9 T_c\) (\(T_c\) is the critical temperature of deconfinement). This suggests that the deconfined plasma is non-perturbative enough to hold heavy-quark bound states. The importance of having sufficient number of temporal data points in MEM analyses is also emphasized.

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          Author and article information

          Journal
          28 August 2003
          2003-11-13
          Article
          10.1103/PhysRevLett.92.012001
          hep-lat/0308034
          f5416c5a-1d0f-4302-b673-54c3961eb3c8
          History
          Custom metadata
          Phys.Rev.Lett. 92 (2004) 012001
          4 pages, 4 figures, REVTEX, version to appear in Physical Review Letters
          hep-lat hep-ph nucl-ex nucl-th

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