Finite Temperature QCD Sum Rules: A Review

Figure 14

The dimuon invariant mass distribution in In + In collisions in the region of the -meson using (11) with predetermined values of thermal parameters from QCDSR, (37), (39), and (42) (solid curve). Dash curve is for all -parameters independent of . The predicted resonance broadening and the flattening of the invariant mass distribution near the peak are clearly observed. Data is from [66–70]. Results are for . Finite chemical potential results change slightly in off-peak regions (see [77]).