volume 42, issue 5, P1744-1756 1990
DOI: 10.1103/physrevd.42.1744
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Abstract: QCD sum-rule techniques are applied to the spectra ofp and J / 3 mesons at finite temperature to investigate the relative importance of quark and gluon condensates and perturbative thermal effects in determining bound-state parameters. Of particular interest are the consequences of nonperturbative physics persisting above the deconfinement phase transition, which is implied by nonzero gluon condensates found in lattice calculations. For the p meson, the quark thermal bath induces only a smooth variation in th…

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