The Role of Electroweak Corrections for the Dark Matter Relic Abundance
  We analyze the validity of the theorems concerning the cancellation of the
infrared and collinar divergences in the case of dark matter freeze-out in the
early universe. In particular, we compute the electroweak logarithmic
corrections of infrared origin to the annihilation cross section of a dark
matter particle being the neutral component of a SU(2)_L multiplet. The
inclusion of processes with final state W can modify significantly the cross
sections computed with only virtual W exchange. Our results show that the
inclusion of infrared logs is necessary for a precise computation of the dark
matter relic abundance.
