Simulation of the process $e^+ e^- \mapsto e^+ e^- \gamma$ within   electroweak theory with longitudinally polarized initial electrons
  We present simple analytic expressions for the distributions of the Bhabha scattering process with emission of one hard photon, including weak boson exchanges, and with longitudinal polarization of the initial electron. The results from the Monte Carlo generator BHAGEN-1PH, based on these expressions, are presented and compared, for the unpolarized case, with those existing in literature. 
M. Caffo, H. Czyz and E. Remiddi