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High Energy Physics - Lattice

arXiv:hep-lat/0401010 (hep-lat)
[Submitted on 6 Jan 2004]

Title:Charmonium correlators at finite temperature in quenched lattice QCD

Authors:Hideo Matsufuru, Takashi Umeda, Kouji Nomura
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Abstract: We study charmonium correlators at finite temperature using quenched lattice QCD simulations. Two analysis procedures are applied to extract information on the spectral function: the maximum entropy method, and the $\chi^2$ fit analyses including the constrained curve fitting. We focus on the low energy structure of the spectral function by applying the smearing technique. We first discuss the applicability of these methods to the finite temperatures by analyzing the data at T=0 with restricted numbers of degrees of freedom. Then we apply these methods to the correlators at $T>0$. We find no indication of mass shift and finite width for the charmonium states at $T\simeq 0.9T_c$. The results at $T\simeq 1.1 T_c$ imply that bound-state-like structures may survive even above $T_c$.
Comments: Talk given at Color Confinement and Hadrons in Quantum Chromodynamics (Confinement 2003), Saitama, Japan, 21-24 July 2003; 5 pages, 3 eps figures
Subjects: High Energy Physics - Lattice (hep-lat)
Cite as: arXiv:hep-lat/0401010
  (or arXiv:hep-lat/0401010v1 for this version)
  https://doi.org/10.48550/arXiv.hep-lat/0401010
Related DOI: https://doi.org/10.1142/9789812702845_0041

Submission history

From: Hideo Matsufuru [view email]
[v1] Tue, 6 Jan 2004 16:36:09 UTC (48 KB)
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