Dark matter of weakly interacting massive particles and the QCD equation of state

  title={Dark matter of weakly interacting massive particles and the QCD equation of state},
  author={Mark Hindmarsh and Owe Philipsen},
  journal={Physical Review D},
Weakly Interacting Massive Particles (WIMPs) of mass m freeze-out at a temperature T{sub f}{approx_equal}m/25, i.e. in the range 400 MeV-40 GeV for a particle in the typical mass range 10-1000 GeV. The WIMP relic density, which depends on the effective number of relativistic degrees of freedom at T{sub f}, may be measured to better than 1% by Planck, warranting comparable theoretical precision. Recent theoretical and experimental advances in the understanding of high-temperature QCD show that… 

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