Dilepton Spectroscopy of QCD Matter at Collider Energies
Figure 11
Simulations of dielectron invariant-mass spectra in Pb-Pb(5.5 ATeV) collisions assuming the thermal spectra shown in (a) of Figure 10 as the excess signal [83, 84]. In addition to the acceptance cuts on single-electron rapidity and momentum, pair efficiency and displaced vertex cuts are included here. (a) Invariant-mass spectra after subtraction of combinatorial background; in addition to the thermal signal, the simulated data contain the hadronic cocktail and correlated open-charm decays. (b) Simulated excess spectra after subtraction of the cocktail and the open-charm contribution using displaced vertex cuts.
