Two-loop electroweak corrections to high energy large-angle Bhabha   scattering
  We compute the dominant logarithmically enhanced two-loop electroweak corrections to the electron-positron scattering differential cross section in the high energy limit for large scattering angles. Depending on the scattering angle and energy the two-loop corrections may exceed one percent and are important for the high-precision luminosity spectrum determination at a future linear collider. 
A. A. Penin and G. Ryan
hep-ph