Meson Screening Masses at high Temperature in quenched QCD with improved Wilson Quarks

Abstract

We report on a lattice investigation of improved quenched Wilson fermions above and below the confinement-deconfinement phase transition. Results on meson screening masses as well as spatial wave functions are presented. Moreover, the meson dispersion relation is studied. Below the critical temperature we do not observe any significant temperature effect while above $T_c$ the data are consistent with a leading free quark behavior.

LaTeX, 27 pages, 8 figures

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