Speaker
Description
This talk approaches electroweak WIMP annihilation from the perspective of the EFT for quarkonium annhilation. After discussing the similarities and differences, I cover next-to-leading order corrections to the potential between static sources with SU(2) x U(1) charge after electroweak symmetry breaking and their impact on the computation of the Sommerfeld-corrected dark matter relic density. Precise calculations of annhilation into an exclusive or semi-inclusive final state with electroweak charges requires in addition the summation of large electroweak Sudakov logarithms. The cosmic ray spectrum of high-energy photons with near maximal energy from dark matter annihilation is resummed at NLL' accuracy with SCET methods and combined with the NLO Sommerfeld effect.
