QED Radiative Correction for the Single-W Production using a Parton   Shower Method
  A parton shower method for the photonic radiative correction is applied to the single W-boson production processes. The energy scale for the evolution of the parton shower is determined so that the correct soft-photon emission is reproduced. Photon spectra radiated from the partons are compared with those from the exact matrix elements, and show a good agreement. Possible errors due to a inappropriate energy-scale selection or due to the ambiguity of energy scale determination are also discussed, particularly for the measurements on triple gauge-couplings. 
Y. Kurihara, J. Fujimoto, T. Ishikawa, Y. Shimizu (KEK), K. Kato, K.   Tobimatsu (Kogakuin-Univ.), T. Munehisa (Yamanashi-Univ.)