A lattice calculation of thermal dilepton rates

  title={A lattice calculation of thermal dilepton rates},
  author={F. Karsch and E. Laermann and P. Petreczky and S. Stickan and I. Wetzorke},
  journal={Physics Letters B},
Using clover improved Wilson fermions we calculate thermal vector meson correlation functions above the deconfinement phase transition of quenched QCD. At temperatures 1.5 T-c and 3 T-c. they are found to differ by less than 15%, from that of a freely propagating quark-anti-quark pair. This puts severe constraints on the dilepton production rate and in particular rules out a strong divergence of the dilepton rate at low energies. The vector spectral function, which has been reconstructed using… Expand

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