Top pair production in e+ e- collisions with virtual and real   electroweak radiative corrections
  The effect of virtual electroweak corrections to $e^+e^- \rightarrow t \bar{t}$ and the contribution of the radiation processes $e^+e^- \rightarrow t\bar{t}Z, t\bar{t}H$ to the inclusive top pair production cross section and forward-backward asymmetry are discussed in the high energy regime. 
V. Driesen, W. Hollik, A. Kraft