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

摘要

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