Dilepton Spectroscopy of QCD Matter at Collider Energies
Figure 10
Dielectron invariant-mass spectra from thermal radiation in 0–40% central Pb-Pb(2.76 ATeV) (a) and 0–10% central Pb-Pb(5.5 ATeV) (b), including single-electron cuts to simulate the ALICE acceptance. Hadronic (with in-medium or vacuum EM spectral function) and QGP contributions are shown separately along with the sum of in-medium hadronic plus QGP. Here and in the following LHC plots, both vacuum and in-medium hadronic emission rates in the LMR have been supplemented with the vacuum spectral function in the LMR; that is, no in-medium effects due to chiral mixing have been included (for all RHIC calculations shown in the previous sections, full chiral mixing was included).
